Obsidian Flow:
Northern California Coast
Obsidian Flow:
Northern California Coast
Obsidian Flow:
Northern California Coast
Obsidian Flow:
Northern California Coast
Obsidian Flow:
Northern California Coast
Obsidian Flow:
Northern California Coast
Obsidian Flow:
Northern California Coast
Obsidian Flow:
Northern California Coast
Obsidian Flow:
Northern California Coast
Obsidian Flow:
Northern California Coast
Obsidian Flow:
Northern California Coast
Obsidian Flow:
Northern California Coast
Obsidian Flow:
Oregon Caves National Monument
Obsidian Flow:
Oregon Caves National Monument
Obsidian Flow:
Oregon Caves National Monument
Obsidian Flow:
California & Oregon 2013 July
Obsidian Flow:
California & Oregon 2013 July
Obsidian Flow:
California & Oregon 2013 July