Two views of a burned basin-shaped feature (Feature 2) in mound 6, unit 46N 2W, part of an area that archaeologists interpret as a metallurgical workshop. The feature has been sectioned to reveal its profile. Viewed from the top, the circular feature consists of a ring of fire-hardened yellowish red (Munsell color 5YR 5/8) sediment. The fire-hardened matrix is thicker at its top edge than it is at the bottom of the basin, where its color is dark red (Munsell 2.5YR 3.6). In profile view (second photo), the basin appears as a narrow band of yellowish red fire-hardened sediment. The fire-hardened sediment is thin and rounded at the base of the basin, suggesting that it may have formed around a round-based vessel used to heat metals. A thermoluminescence sample of the burned matrix yielded a date of 1490 +/- 50 years (Univ. Wash. 2364). Photo scale in cm. Site Ngre Kataa. 23 June 2009.
A large insitu anvil/grinding stone in an area interpreted by archaeologists as a metallurgical workshop. It is associated with several smaller stones that show signs of use as grinding or hammer stones. On the northwest side of the stone is a partial pottery vessel--unusual for its layered construction (NK 09-787). To the right of the partial pot are two flat iron discs (larger, above, SF 09-370 and smaller, below SF 90-371). The smaller grinding stone (upper left of photo) rested, grinding surface down, on top of a pottery jar (NK 09-788) which was exposed in the next excavation level. Photo scale bar in 5 cm increments. Photo arrow pointing north. Site Ngre Kataa. 4 July 2009.
A large insitu anvil/grinding stone in an area interpreted by archaeologists as a metallurgical workshop (two views). It is associated with several smaller stones that show signs of use as grinding or hammer stones. On the northwest side of the large stone (GS 09-15) is a partial pottery vessel--unusual for its layered construction (NK 09-787). Sitting adjacent to the partial pot are two flat iron discs (larger one, above in photo 1, SF 09-370 and smaller, below in photo 1, SF 90-371). A smaller grinding stone (GS 09-24) sits northeast of the anvil stone, positioned with its grinding surface down. It rested on top of a pottery jar (NK 09-788) which was exposed in the next excavation level. An area of fire-hardened sediment to the southeast of the anvil stone (photo 2) is interpreted as part of a forging feature. Photo scale bar in 5 cm increments. Photo arrow pointing north. Site Ngre Kataa. 4 July 2009.
A pottery lid (NK 09-626) is positioned vertically with its interior surface facing south. Above it (slightly right) is a poorly preserved, friable dog skull. A large tree root has been truncated above and left of the pot lid. Beneath the lid is an iron bangle (SF 09-219), angled upward. The bangle is pressed up against a dog mandible, which has been placed at a diagonal angle below the pot lid, its mandibular joint oriented upward. Several teeth remain in the mandible. A burned feature can be seen immediately below this assemblage of objects. This cluster (B, 11) was part of a larger set of clusters (A-D) that archaeologists interpret as a shrine in a metallurgical workshop. Photo scale at top in cm. Arrow pointing north. Site Ngre Kataa. 16 June 2009.
A pottery lid (NK 9 09-626) is positioned vertically with its interior surface facing south. Above it (slightly right) is a poorly preserved, friable dog skull. A large tree root has been truncated above and left of the pot lid. Beneath the lid is an iron bangle (SF 09-219), angled upward. The bangle is pressed up against a dog mandible, which has been placed at a diagonal angle below the pot lid, its mandibular joint oriented upward. Several teeth remain in the mandible. A burned feature can be seen immediately below this assemblage of objects. This cluster (B, 11) was part of a larger set of clusters (A-D) that archaeologists interpret as a shrine in a metallurgical workshop. Photo scale at top in cm. Arrow pointing north. Site Ngre Kataa. 16 June 2009.
A fragmented pottery lid (NK 09-626) is positioned vertically with its interior surface facing south. A large tree root is visible behind the lid, below the sign board. A dog cranium positioned above and an iron bangle placed below the lid have been removed. Additional excavation has exposed several pottery rim sherds below a dog mandible, which is positioned diagonally below the pot lid with its mandibular joint oriented upward. Several teeth remain in the mandible. A second less well-preserved dog mandible has been exposed below this. A burned feature can be seen immediately below this assemblage of objects. This cluster (B, 11) was part of a larger set of clusters (A-D) that archaeologists interpret as a shrine in a metallurgical workshop. Photo scale marked in 5 cm increments. Arrow pointing north. Site Ngre Kataa. 30 June 2009.
A tree that took root atop a shrine cluster has been cut back to a stump (center photo). Most of the objects in the shrine clusters (B-C) have been removed. To the left and below the tree stump, clusters of pottery (10 & 11) can be seen, including a red-colored pottery lid oriented vertically (cluster 11). An iron bangle, a dog cranium and dog mandibles were found associated with that lid. To the right (north) of the stump, a tri-looped iron bangle (SF 09-218) has been pedestaled (left of the black-and-white photo scale stick). The level above this had been covered by a cluster (cluster C) of pottery, including several pot lids, together with an iron bangle and a miniature pair of iron manacles. To the east and west, two large anvil stones are visible, one to the right (east) of the tree stump (GS 09-26) and one to the left (west, GS 09-32). To the left of the stump, a burned feature is visible below the pottery cluster (cluster 11). Photo scale bar marked in 5 cm increments. Arrow pointing north. Site Ngre Kataa. 16 June 2009.
Looking eastward over excavation unit 48N 10W toward unit 48N 8W in an area (mound 6) that archaeologists interpret as a metallurgical workshop, a series of anvil/grinding stones have been left in place and a burned feature exposed. Foreground, right, a large anvil stone (GS 09-33) rests atop another stone (GS 09-34). To the right (south), the circular rim of an everted-rim jar has been left in place. To the left (north) is a zone of darker ashy soil flecked with charcoal. Center photo is an anvil stone (GS 09-32), against which a partial elephant tusk--now removed--was found resting. Behind this stone is a tree root and base of a tree stump. The area from this stone (GS 09-32) and extending beyond the stump had been covered with artifacts (clusters B-D, now removed) that archaeologists interpret as a large shrine feature. Some of these artifacts were superimposed directly over the amorphous orange-red burned feature (center photo), which was likely created by high heat associated with forging metals. Other smaller stones have been left in place across the unit. Photo scales marked in 5 cm increments, arrows pointing north. Site Ngre Kataa. 4 July 2009.
A boulder used an an anvil stone (GS 09-03) sits insitu, center photo, in an area (mound 6) that archaeologists interpret as a metallurgical workshop. The surface facing the camera is worn flat and smooth from use. Its upper surface shows depressions created by use. Behind this boulder is a flat grinding stone (GS 09-04) with a very worn upper surface. Another boulder (GS 09-02) is visible left (north). Behind it the pedestal base of a pot is visible along the adjacent unit's southern edge. The moistened soil in front of the sign board marked by two orange pin flags marks the find spot of an iron point (SF 09-033). Photo scale along unit edge measures two meters. Arrow pointing north. Site Ngre Kataa. 30 May 2009.
A vertical bank of orange-colored fire-hardened soil abuts a cluster of stones in what archaeologists interpret as a forge feature in a metallurgical workshop. The furnace feature occupied the northwest corner of the excavation unit. In the southern haf of the 2x2 m unit were large boulders used as anvil/grinding stones (GS 09-01 and 09-02). A tree root is visible along the base of the unit's western wall (left). Photo scale by burned feature marked in cm. Arrow pointing north. Site Ngre Kataa. 1 June 2009.