Geographer David: Firehole River falls, Yellowstone National Park, Wyoming
Geographer David: Yellowstone National Park, Wyoming
Geographer David: Yellowstone National Park, Wyoming
Geographer David: Yellowstone National Park, Wyoming
Geographer David: Yellowstone National Park, Wyoming
Geographer David: Yellowstone National Park, Wyoming
Geographer David: Yellowstone National Park, Wyoming
Geographer David: Yellowstone National Park, Wyoming
Geographer David: Yellowstone National Park, Wyoming
Geographer David: Yellowstone National Park, Wyoming
Geographer David: Yellowstone National Park, Wyoming
Geographer David: Yellowstone National Park, Wyoming
Geographer David: Yellowstone National Park, Wyoming
Geographer David: Yellowstone National Park, Wyoming
Geographer David: Clepsydra Geyser, Yellowstone
Geographer David: Clepsydra Geyser
Geographer David: Clepsydra Geyser
Geographer David: Clepsydra Geyser
Geographer David: Clepsydra Geyser
Geographer David: Clepsydra Geyser
Geographer David: Clepsydra Geyser
Geographer David: Clepsydra Geyser
Geographer David: Clepsydra Geyser
Geographer David: Clepsydra Geyser
Geographer David: Clepsydra Geyser
Geographer David: Clepsydra Geyser
Geographer David: Clepsydra Geyser
Geographer David: Clepsydra and New Bellefontaine Geysers, Yellowstone
Geographer David: Clepsydra and New Bellefontaine Geysers, Yellowstone
Geographer David: Clepsydra Geyser