This SfM model is part of a before-and-after glimpse into archaeology and the processs of excavation. This mass of bone is a grouping of bison antiquis (extinct bison) bones and mandibles (lower jaw). The large boulder in the model might have been used by humans to break open the bison longbones for marrow extraction. The SfM model following this one shows the excavation starting from the sediment deposit above, down to this level.