Rock art in Sudan has become one of my favourite topics ever since I worked in the Fourth Cataract region in the 2000s. Within the MUAFS concession between Attab and Ferka, there are not many sites with rock drawings. Unsurprisingly, rock art is restricted to certain areas with fitting geology and large boulders – in our concession these are the districts of Ferka, Mograkka and Kosha (Fig. 1). Close to Mograkka, one particularly handsome engraving was chosen as the basis for the MUAFS logo.
Some of these sites are located in close proximity to Kerma funerary sites. This holds especially true for 3-P-14 (Kosha West), 3-G-18 (Ferka East) and 3-P-5 (Kosha East).
3-G-18 is located on rocky outcrops within the large plain of Ferka and directly adjacent to the Kerma cemetery 3-G-16 (Fig. 2). Kerma cemetery 3-G-19 is also not far away. These sites are of particular interest because they are the northernmost Kerma sites in our concession.
The largest rock art site is located at the border between Mograkka and Kosha East, site 3-P-5, with more than 400 individual rock art pictures (Vila 1976, 79‒87). The motifs comprise mostly cattle, antelopes, some human depictions, birds, dogs and other animals (Figs. 3-4).
While Vila left the dating as unclear, most of the rock art pictures at 3-P-5 seem to belong to the Kerma period (Budka 2020). Similar to 3-G-18 in Ferka, there are Kerma sites in the close proximity to 3-P-5 which support this dating.
In all phases of the Kerma culture, the dominant motif of rock art is cattle. Of course this reflects the importance of cattle herding to Kerma people – some aspects of which were recently addressed by Jérôme Dubosson at one of our DiverseNile Seminar Series 2022. In the words by Louis Chaix: “Cattle are a key constituent element of the civilization of Kerma. They played a major role in the diet of the population and as a source of secondary products such as milk, hides, and raw materials for making tools. They also contributed to agriculture as traction animals.” (Chaix 2017). Within the DiverseNile project, we aim to address the local role of cattle for the Kerma people by means of a multidisciplinary approach, combining landscape archaeology with bioarchaeology and of course analysing all kinds of archaeological findings like animal bones, animal figurines and engraved figures of cattle in rock art.
Coming back to the question of rock art, the spatial proximity of rock art panels depicting cattle and Kerma funerary sites was already noted by Cornelia Kleinitz in the Fourth Cataract region (Kleinitz 2007). As tempting as it is to link these rock drawings with Kerma funerary cult, at the Fourth Cataract and also in the MUAFS concession, a precise dating of cattle depictions in rock art often remains impossible.
Nevertheless, we will soon be back in the field in Sudan – one of the goals for the 2023 season is to expand the documentation of rock art in our concession, with a special focus on possible Kerma sites. Contextualising rock art sites clearly has much potential for a closer understanding of their date and function.
Budka, Julia 2020. Kerma presence at Ginis East: the 2020 season of the Munich University Attab to Ferka survey project. Sudan & Nubia 24, 57-71.
Chaix, Louis 2017. Cattle: a major component of the Kerma culture (Sudan). Edited by Umberto Albarella, Mauro Rizzetto, Hannah Russ, Kim Vickers, and Sarah Viner-Daniels. Oxford Handbooks Online 2017 (April), 15 p.; 4 figs. DOI: 10.1093/oxfordhb/9780199686476.013.2
Kleinitz, Cornelia 2007. Rock art and archaeology: the Hadiab survey. Sudan & Nubia 11, 34-42
Vila, André 1976. La prospection archéologique de la Vallée du Nil, au Sud de la Cataracte de Dal (Nubie Soudanaise).Fascicule 4: District de Mograkka (Est et Ouest), District de Kosha (Est et Ouest). Paris.
Still on the traces of Nubian goldsmiths, I would like to share some thoughts about a fascinating type and a goldsmith technique common in modern jewellery but already used and widespread in Kerma time: the gold bezel.
Significant for the study of local gold working in Nubia is a scarab necklace with gold bezel from tomb K1053 at Kerma (Fig. 1), dating to the Classic Kerma Period (c. 1700-1550 BCE). This string is composed of carnelian and amethyst beads of different shapes and typologies and a beautiful blue-glazed steatite scarab pendant set in an accurate gold bezel. According to Markowitz, the gold bezel was added and created by Nubian goldsmiths to emphasize the high rank and role of its owner (Markowitz, Doxey, 2014). The elite individual (Body D) of the Classic Kerman subsidiary grave K1053 was a Kerman woman buried with typical personal adornments, such as a silver headdress, a leather skirt with silver beaded drawstring, a necklace of blue-glazed crystal ball beads, a double set of gold armlets and bracelets on her upper and lower arms and this fascinating gold bezel scarab necklace held in her hand (Minor, 2018) (Fig. 2).
Other interesting gold bezel scarabs are attested from Kerma: a blue-glazed steatite scarab back covered with gold plate (K X B, western part, Body XK); a scarab with gold back-cover and two carnelian sphinxes amulets (K 439, Body B); an uninscribed amethyst scarab uninscribed with a gold mounting (K IV B, Body J) (Reisner, 1923, pp. 198-228-305).
Really fascinating traces of a specific typology of gold bezel come from the heart scarab (SAC5 349) of the goldsmith Khnummose, found with his body in the Tomb 26 (Chamber 6) at Sai Island (New Kingdom, mid-18th Dynasty) (Budka, 2021). This inscribed serpentinite heart scarab, discovered by our PI Julia Budka and her AcrossBorders’ Team (read here more on this extraordinary discovery!), was found in situ with gold foil remains. During the process of cleaning, fragile strips of gold were found close to the head of the scarab and only one piece was clearly attached around the base, suggesting the presence of a bezel, most likely made with a very fine gold leaf. Indeed, the largest gold fragment has a large hole pierced through it, probably connected to the holes of the scarab (Budka, 2021) (Fig. 3).
The heart scarabs were occasionally enclosed in gold mountings in Egyptian jewellery during the New Kingdom, manufactured through the use of two main techniques: the lost wax or the welding of two separate pieces of a gold sheet (Andrews, 1994; Schäfer, Möller, Schubart, 1910). Both are still used in modern jewellery; the second technique allows the creation of a particular type of bezel exclusively used for heart scarabs. It’s a gold bezel that not only holds the base of the scarab but is characterized by a T-cage that supports the funerary amulet along the part of the scarab body called elytra (the closed wings), following their shape (Fig. 4). These gold bezel heart scarabs were hung from a gold chain or tourques through a suspension loop welded on the upper part of the bezel or the perforated scarab and bezel. Excellent examples are dated to the 18th Dynasty: the serpentinite and gold heart scarab of Neferkhawet (MMA 729), early 18th Dynasty, Thebes, Asasif (Fig. 5); the green schist and gold heart scarab of Maruta (Tomb of the Three Foreign Wives of Thutmose III), 18th Dynasty, Thebes, Wadi Gabbanat el-Qurud (Fig. 6); the green jasper and gold heart scarab of Djehuty, 18th Dynasty, Saqqara (Andrews, 1994; Budka, 2021).
Coming back to Tomb 26, the family tomb of goldsmith Khnummose, there was also an exceptional steatite scarab ring in gold and silver (SAC5 388) of the 18th Dynasty (Budka, 2021) (Fig. 7). It was discovered with the female Individual 324. Among her bodily adornment, there was also an interesting necklace with carnelian and bone crocodile pendants and beads in different materials, such as gold (exactly 180 beads!). The finger ring has a heavy gold setting, most likely made by wax carving and lost wax techniques. The shank of the ring is in silver, while its small domed caps are gilded. The thin gold wire threads through the scarab, the gold bezel and the gilded caps twisting on both sides of the ring and finally fixed in small holes drilled in the silver shank (for an accurate description of these and other beautiful finds from the Tomb 26 do not forget you can find the complete book here https://www.sidestone.com/books/tomb-26-on-sai-island).
The gold bezel seems to be a distinctive feature of the Nubian jewellery, but additionally, these bezels from Sai come from the tomb of a local goldsmith and his family. Khnummose held two titles: “goldworker/goldsmith” and “overseer of goldworkers” (Auenmüller, 2020; Budka, 2021).
Even if with a less sophisticated mounting than the typology of the gold and silver ring from the Tomb 26, another intriguing comparison comes from Aniba and two scarab rings (n.34, n.36; see Budka, 2021, 212). The moving bezel is fixed to the ring by a thin metal wire that passes through the scarab, twisting on both sides of the ring. The ring n.34 is in silver, while the n.36 is in bronze (Steindorff, 1937, 111, pl. 57, nos. 34 and 36).
During the New Kingdom, the scarab mounted in gold remained the most common design for finger rings (Wilkinson, 1971). This technique, the mounting of the gold bezel, characterized by different methods (Maryon, 1971), appears already among the “innovations” of the Middle Kingdom goldsmithing. The first scarab rings were made from a single wire. From the 13th Dynasty the ends of the ring were equipped with grommets through which passed the wire that held the perforated stone. However, friction between the stone and the metal frequently led to shredding, therefore goldsmiths started to create “a metal protection” for the stone: the bezel (Schäfer, Möller, Schubart, 1910).
It has been suggested that the Egyptians adopted this goldsmithing typology and technique from a foreign people, perhaps from the Mycenaean culture where these rings were used (Schäfer, Möller, Schubart, 1910). However, the gold bezels found at Kerma, used as pendants/amulets rather than rings, but also the later examples from Sai, could attest to a local Nubian typology and manufacturing, the possible influence or technology transfer between Egypt and Nubia and the use of different techniques and specific tools already during Kerma times and through the New Kingdom.
Andrews C., 1994, Amulets of Ancient Egypt, British Museum Press, London.
Auenmüller J., 2020, Nubisches Gold und ägyptische Präsenz: Pharaonische Goldgewinnung in der Nubischen Wüste, in: M. Kasper, R. Rollinger, A. Rudigier& K. Ruffing (eds.), Wirtschaften in den Bergen. Von Bergleuten, Hirten, Bauern, Künstlern, Händlern und Unternehmern, Montafoner Gipfeltreffen 4, Wien, 37–54.
Budka J., 2021, Tomb 26 on Sai Island. A New Kingdom elite tomb and its relevance for Sai and Beyond, Sidestone Press, Leiden.
Markowitz Y., Doxey D. M., 2014, Jewels of Ancient Nubia, MFA Publications, Boston.
Minor E., 2018, Decolonizing Reisner: a case study of a Classic Kerma female burial for reinterpreting Early Nubian archaeological collections through digital archival resources, Nubian Archaeology in the XXIST century, Proceedings of the Thirteenth International Conferencefor Nubian Studies, Neuchâtel, 1st-6th September 2014, PEETERS, LEUVEN – PARIS – BRISTOL, CT, 251–262.
Reisner G.A., 1923, Excavations at Kerma, Parts I-III,Joint Egyptian Expedition of Harvard University and the Boston Museum of Fine Arts, Harvard African Studies 5, Cambridge.
Schäfer H., Möller G., Schubart W., 1910, Äegyptische Goldschmiedearbeiten, Verlag Von Karl Curtius, Berlin.
Steindorff G., 1937, Aniba. Zweiter Band. Service des Antiquites de l’Egypte. Mission archeologique de Nubie 1929-1934. Glückstadt: Augustin.
Wilkinson A., 1971, Ancient Egyptian Jewellery, London.
Digital technologies continue to inundate archaeology as a means of bridging scientific and humanistic approaches. More than merely an exercise in playing with flashy machines and fancy toys, 3D printing has wide-ranging implications for fostering education and outreach, the accessibility of archaeological heritage, and explorations in experimental archaeology.
We also decided to experiment with printing an inscribed stone heart scarab also from the AcrossBorders project at Sai Island (figure 1). This object was excavated from the 18th dynasty burial of Khnum-mes and is inscribed on the bottom with Chapter 30 from the Book of the Dead (Budka 2021). Check out a blog post from 2017 about this find here.
To create models, we use photogrammetric methods to align photos of the object in Agisoft’s Metashape to create a textured mesh (figure 2). The photos of this object were taken during a study season in Khartoum in 2017 by Cajetan Geiger.
For this project, we needed a printed object quickly for a television appearance (keep reading to find out more!) so I looked into commercial printing options. I came across Xometry, a Germany-based company offering on-demand manufacturing of industrial parts. I like to think that they were both confused and delighted when they saw the small, inscribed objects on their platform!
Pros of this service: Xometry has a well-designed, functional, and easy to use website. With their instant quoting engine, you can upload 3D models (.stl, .obj, and many other formats) and immediately receive a cost and shopping estimate. Also, if there are issues with your model the engine will detect them. You can also choose the specific color, material, weight, and finish of your print.
Cons: While the website has extensive options for types of printing materials, most of the options are obviously very light-weight industrial plastics, polycarbonates, silica glasses, and nylons. If you are aiming for realism in your 3D print, you will not come across colors or materials on this site that can replicate those of many archaeological objects. Also, it should be noted that for this company, the minimum order is €50. If you just want one or two prototypes of small objects, you will have to order A LOT of copies just to come close to this high of a minimum!
Given the drawbacks of working with large 3D printing companies like Xometry, I began to look into the possibility of collaborating with institutes on campus that may offer printers. After a bit of digging, I contacted the Medieninformatik Lab at LMU. Luckily, they have, not one, not two, but three (!) high quality, professional 3D printers; a Prusa Mini+ (PLA-3D printer), a Prusa i3 MK3S+ (PLA-3D printer), and the pièce de resistance, a Formlabs Form 3 (SLA-3D printer). The Prusa Mini+ and Prusa i3 models are some of the most ubiquitous printers (figure 3). They are extrusion-based printers which operate by heating a plastic material through a tube (filament) and distributing the heated material on a platform layer by layer, until it takes the full form of the object. The material is Polylactic acid (PLA) and can be heated at a low temperature. It is a robust, low-cost, and biodegradable material. Xometry prints using this method.
The Formlabs 3 printer operates with an entirely different method (figure 4). It uses stereolithography (SLA), which is a type of additive manufactory technology employing resin 3D printing. A light source like a laser or projector heats and cures liquid resin at a high temperature into hardened plastic in the shape of a 3D model. SLA printers have the ability to capture the highest resolution and most accurate details of objects, along with smoother surfaces and more complex geometries (size and shape of the print).
Preliminary Results Printing with Xometry and the Medieninformatik Lab:
As apparent in figure 5, three different printing methods yielded three vastly different results. On the far left of the image is a print of the seal impression using a Prusa Mini+. As is evident, the fine details of the inscription of Nehi were too high resolution for the printer to capture with accuracy. The inscription is not legible and overall, the surface and geometry of the object are not clean. The middle print is of the seal impression from Xometry. Even though Xometry used a PLA printer (like the Prusa) the print is of a higher resolution, and the geometry of the object is more accurate. The surface is smoother and the inscription, while not perfect, is legible. Lastly, the far-right print is from the Formlabs 3 printer. This by far, is the highest quality and highest resolution print! The inscription is very legible, and the geometry of the object is extremely accurate. The surface is also smooth, extremely detailed, and shows no signs of lumps or imperfections in the raw material. While the Formlabs 3 printer is a more time-intensive and expensive process, the cured resin clearly is the superior material to capture intricate and complex details of smaller objects (figure 6).
In terms of the heart scarab, the differences between prints are less stark but still significant. As evident in figure 7, the Xometry print (on the left) and the Prusa Mini+ print (on the right) are similar in shape and detail. The Prusa print has a smoother and cleaner surface, and slightly more legible details near the top of the scarab.
The bottom of the scarab demonstrates the biggest difference between the two prints (figure 8). The inscription was not captured at all on the Xometry print (left), due to the direction in which the print was oriented. If the print is rendered layer by layer with the bottom of the object flat on the printing platform, then any detail on the bottom of the object will not be captured. However, with the Prusa Mini+ print (right) the object was printed at an angle, and the result is a legible inscription (figure 9).
From these preliminary printing exercises, it was fascinating to see just how different prints of the same object can turn out given the variety of available printers, raw materials, and approaches. Clearly the various methods explored here have their pros and cons. 3D printing methods must be tailored to the specific goals of the project and qualities of the object/3D model. Trial and error, if you have the available resources and time, is a terrific way to start!
The Significance and Broader Impact of 3D Modeling and Printing
As an archaeologist who is interested in digital technologies, I am asked all the time (by fellow archaeologists and non-specialists alike), what is the purpose of making 3D models of artifacts that already exist? What keeps us from creating glorified toys that just sit and gather dust on shelves?
The truth is….3D modeling applications in archaeology is a means of addressing several unique problems of studying the ancient past. Firstly, 3D prints of archaeological objects that can be handled and shared without any risk of damage to the original artifact is invaluable. For objects that are restricted to museum collections or excavation archives, 3D models increase the accessibility of the archaeological record, not only to scholars in different regions, but also to members of the public. High quality 3D models that capture valuable information such as inscriptions and technological means of production can be used as tools in public outreach and education. In fact, our PI Julia Budka just demonstrated this during her recent appearance on the wildly popular children’s show, “1, 2, oder 3?” On a show dedicated to ancient Egypt, she brought our Xometry print of the seal impression to teach children that even objects made of seemingly quotidian materials like mud can be extremely important to archaeologists. 3D models expand and diversify the types of environments in which objects can be used in teaching.
Here is a link to the full episode if you would like to check it out!
Lastly, 3D printing can be used alongside other experimental archaeological approaches. For example, our graduate student Sofia Patrevita is studying goldsmithing techniques in Nubian jewelry making, including the lost wax technique. See her recent blog post here. The 3D printing lab at LMU has the ability to print objects in wax (among other materials), which could allow us to experiment with recreating jewelry in various stages of production, giving us insight into the chaîne opératoire of Nubian goldsmithing. Sofia and I are looking forward to exploring this possibility in future collaborations!
A huge thanks to the Medieninformatik Lab at LMU for access to their printers and resources, and especially to Boris Kegels for providing the access and printer training. Thanks also too Christine Mayer and Prof. Dr. Nicola Lercari of the Institute for Digital Cultural Heritage Studies at LMU for helping facilitate this collaboration!
Stay tuned for an update on our most ambitious 3D printing project yet, a to-scale reproduction of Khnum-mes’s shabti from Sai Island!
Budka, Julia. 2021. Tomb 26 on Sai Island: a New Kingdom Elite Tomb and Its Relevance for Sai and Beyond. Leiden: Sidestone Press.
Julia and I have just returned to (a very cold!) Germany, after a fantastic time in Cairo for the Living in the House: Researching the Domestic Life in Ancient Egypt and Sudan conference. The conference, organised by Fatma Keshk, was fascinating and stimulating, and it was also a great opportunity to catch up with many colleagues and friends.
The conference organised by the Institut français d’archéologie orientale (IFAO) and the Polish Centre of Mediterranean Archaeology in Cairo (PCMA), was held over four days between the two institutes and included a wide range of papers and international scholars. Despite, the significant amount of work and research that tackles settlement and domestic archaeology in Egypt and Sudan, it is rare to have an entire conference dedicated to the topic, and it was fantastic to have this conference held in Cairo. The papers covered a broad range of themes, topics, periods, and interdisciplinary approaches and has given us a lot to think about, particularly for Work Package 1 of the DiverseNile project.
The papers were very well organised into different themes, which allowed for discussion of particular topics and ideas in the time after each session. They included domestic material culture, settlement space and accessibility, the use of domestic spaces, cooking spaces and material culture, recent research on settlement excavations, architecture and building techniques, ethnoarchaeology, religion, and house property. Papers also drew on sensorial experiences and phenomenology to consider what it would have been like to actually live in these houses and settlements, focusing on the lived experience.
All of the papers have given us a lot to think about and consider in our own project, particularly in terms of the separation of domestic and work spaces which was brought up in a number of talks. Including in Mark Lehner’s excellent keynote on the second day, which raised an interesting discussion on the separation, or lack thereof, of public and private life. This drew on interdisciplinary approaches to the study of space and the layout of buildings from architectural and social studies.
The use or influence of interdisciplinary approaches to the study of domestic archaeology was a major theme throughout the conference, which is always fantastic to see in archaeological research. And again, gives us a lot to consider and think about! Such as the numerous ethnographic examples raised, both to provide comparisons and parallels to archaeological evidence, as well as to help us challenge assumptions and think about archaeological remains in different ways. This included Fatma Keshk’s paper on Egyptian houses, drawing on ethnography and ethnoarchaeology to give a better understanding of a number of aspects, including design, categories of houses, factors effecting use (both practical and social), as well as privacy patterns in domestic settings. Also drawing on contemporary examples, was Mennat-Allah El Dorry’s talk, which focused specifically on the kitchen and how it is identified in the archaeological record, based in many cases on modern western concepts of what constitutes a kitchen, rather than the more ephemeral and mobile nature of food preparation.
Challenges to existing assumptions about domestic archaeological interpretation were also raised in a number of other papers. Specifically, for Nubia and Sudan, this included Aaron de Souza’s paper which raised the difficulty of defining ‘Nubian’ or ‘Egyptian’ sites based on architectural and material culture remains. As well, as the long-standing historical biases of Egyptology’s colonial legacies. All of which are of course highly relevant for the DiverseNile project. It was also fantastic to have Ulrike Nowotnick give a talk on the Meroitic town of Hamadab in Sudan, to consider what life would have been like in a densely occupied Meroitic town in the Middle Nile, as well as the spatial organisation of the houses and the walled town. Archaeology in Sudan has, like in Egypt, often focused on mortuary, religious, or monumental archaeological sites.
The question of the spatial organisation of settlements and domestic spaces was another recurring theme over the four days, often in terms of state or centrally organised spaces versus individual agency and choices. Particularly, in the case of remote sites with limited access to natural resources. This is again, something which we need to think about carefully in the DiverseNile project, with the temporary nature or seasonal use of many of the sites likely linked to industrial activities, such as gold processing.
It is of course impossible to talk here about all of the discussions, topics, and papers which took place during the conference, but all the talks were recorded and are available online through the IFAO’s YouTube page. We are both very grateful to the IFAO, the PCMA, and in particular to Fatma Keshk, for an excellent and very inspiring conference.