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Tools made from , people living on the coast were capable of traveling considerable distances, and perhaps had been in the region long enough to establish long-distance trade networks.The Namu site on the central coast of British Columbia was occupied by about 9,700 years BP.
Other evidence from a cave in Oregon may show early human occupation, but not in the form of artifacts or hunting.
Instead researchers have uncovered a few examples of fossilized fecal matter, called , in the lowest levels of Paisley Cave.
Recent findings conclude that the Cascadia Subduction zone is more complex and volatile than previously believed.
Geologists predict a 37 percent chance of a M8.2 event in the next 50 years, and a 10 to 15 percent chance that the entire Cascadia Subduction will rupture with a M9 event within the same time frame (
DNA research on these coprolites suggests that they are human, though other researchers have questioned this analysis, due to the resemblance of these samples to other large herbivore feces and the recovery of canine DNA from the same samples; leading to questions of contamination.
The evidence from these and other coastal sites provides indirect evidence that human populations were present along the Pacific coast at an early time.However, it is possible to draw on the archaeological data from later sites for clues about a possible early occupation of the coast.Radiocarbon dating has confirmed a human occupation at On Your Knees Cave (PET 408) on Prince of Wales Island off the southern Alaska coast by 9800 years BP.Perhaps these sites are examples of early people moving in-land; however the small number of sites uncovered so far makes it hard to determine definitively whether the early settlers came from the coast, or from the east.One of the ways archaeologists are trying to determine the origin of these early people is to look at the types of environmental adaptations they have.Although there is no evidence of an earlier settlement of Haida Gwaii, it seems unlikely that these sites represent the first human occupation of the islands.