 Roosevelt Gate at the north entrance to Yellowstone National Park |
 Old Faithful Geyser in all its glory in Yellowstone National Park |
 Old Faithful Geyser in all its glory in Yellowstone National Park |
 Old Faithful Geyser in all its glory in Yellowstone National Park |
 Blue Star Spring in Yellowstone National Park |
 Morning Glory Pool in Yellowstone National Park |
 Aurum Geyser goes off unexpectedly in Yellowstone National Park |
 Aurum Geyser goes off unexpectedly in Yellowstone National Park |
 A Yellowstone National Park Ranger provides information in front of Grand Geyser |
 Grand Geyser and the surrounding area in Yellowstone National Park |
 Old Faithful Lodge at sunset in Yellowstone National Park |
 Looking up from the lobby of Old Faithful Lodge in Yellowstone National Park |
 The lobby of Old Faithful Lodge in Yellowstone National Park |
 1934 White Tour Bus parked in front of the Old Faithful Lodge in Yellowstone National Park |
 1934 White Tour Bus in Yellowstone National Park |
 Belgian Pool in Yellowstone National Park |
 Grotto Geyser having a minor eruption in Yellowstone National Park |
 Surface features in the Yellowstone National Park Upper Geyser Basin |
 Economic Geyser in Yellowstone National Park |
 Pump Geyser as it constantly churns in Yellowstone National Park |
 Firehole River winding through the Upper Geyser Basin in Yellowstone National Park |
 Rainbow over Old Faithful Geyser as it comes to life in a rain storm in Yellowstone National Park |
 Old Faithful Geyser in a rain storm in Yellowstone National Park |
 Old Faithful Geyser recedes in a rain storm in Yellowstone National Park |
 Double rainbow over Old Faithful Lodge in Yellowstone National Park |
 Dusk in the Old Faithful area in Yellowstone National Park |
 Sunset on the steam rising from Old Faithful Geyser in Yellowstone National Park |
 Distant view of a Grand Geyser eruption in the Yellowstone National Park |
 The sun sets over the Old Faithful area in Yellowstone National Park |
 Hot spring water flows in Yellowstone National Park |