The boardwalk across the Firehole River in Yellowstone National Park's Biscuit Basin is viewed on September 18 in Yellowstone National Park, Wyoming....
steam rising from sapphire pool in biscuit basin, yellowstone national park, united states of america - biscuit basin 個照片及圖片檔
black opal pool, rear firehole river, biscuit basin, yellowstone national park, wyoming, usa - biscuit basin 個照片及圖片檔
thermal pool, midway geyser basin, yellowstone national park, teton county, wyoming. - biscuit basin 個照片及圖片檔
