gbaku:
Prehistoric obsidian quarry south of Riley, Oregon (USA)
gbaku:
Prehistoric obsidian quarry south of Riley, Oregon (USA), 1966
gbaku:
Scatter of obsidian flakes at a prehistoric quarry south of Riley, Oregon (USA)
gbaku:
Prehistoric obsidian quarry south of Riley, Oregon (USA), 1966
gbaku:
Pond near prehistoric obsidian quarry south of Riley, Oregon (USA)
gbaku:
Artifacts from the Riley, Oregon (USA) prehistoric obsidian quarry.
gbaku:
Obsidian artifact from the Riley (Oregon, USA) site