1167-115 - Pines at Mystic Falls, near Biscuit Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
832-244330 - Aerial photo, Essen University, the Gerhard Mercator University, "biscuit tins", Duisburg, Ruhr area, North Rhine-Westphalia, Germany, Europe
832-123923 - Drainage area of the Sapphire Pool, geyser, coloured thermophilic bacteria, microorganisms, Biscuit Basin, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA
698-2287 - Sapphire Pool, Biscuit Basin, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America