Excavation at Kilgii Gwaay, southern Haida Gwaii.
I’ve found that individual powerpoint slides can be saved as JPG images, complete with their annotations. Since I have a lot of these I may share some. The above shows excavation in the shell-rich component of the intertidal site at Kilgii Gwaay. The combination of shellfish remains and saturation in slightly alkaline sea water has produced remarkable preservation for a site which is firmly dated via about 20 carbon samples to 9450 14C BP, or around 10,700 calendar years ago. In this picture you can see some of the evidence: bone tools, stone tools, and the remains of shellfish, fish and mammals which, together with birds, formed the basis of the diet at this summertime camp.
Northwest Coast Archaeology 