Ledge Geyser & Black Growler (4321) In Porcelain Basin (4303) Living Thermometer (4318) Thermophilic Colors (4319) Thermophilic Colors (4320) Norris Geyser Basin Museum (4296) Porcelain Basin (2) Porcelain Basin (4322) Crackling Lake (4329) Vent & Insect (4330) Vent & Insect (4330A) Norris Geyser Basin Museum (4331) Black Growler Steam Vent (4301) Steam Vent (4302) In Porcelain Basin (1717) Porcelain Basin 360 Norris Geyser Basin Museum (4332) Norris Geyser Basin Museum (4297) Bison (4335) Bison Crossing The Road (4336) Bison Crossing The Road (4337) Bison in Hayden Valley (1) Bison Near Canyon Village (4334) Bison Near Canyon Village (4334A) Elk (1718) Elk (1719) Elk (1720) Yellowstone Lake (2) Porcelain Basin (1) Minerva Terrace (3) Minerva Terrace (2) Minerva Terrace (1714) Minerva Terrace (4278) Minerva Terrace (1) Minerva Terrace (4280) Mammoth Hot Springs (4292) Mammoth Hot Springs (4291) Mammoth Hot Springs (4290) Mammoth Hot Springs Boardwalk (4295) Mammoth Hot Springs Boardwalk (4294) Mammoth Hot Springs (4289) Mammoth Hot Springs (4288) Mammoth Hot Springs (4293) Mammoth Hot Springs (4279) Interesting Facts Concerning the Large Inlaid Map… Stuffed Wolf In Visitors Center Exhibit (4257) Stuffed Mountain Lion in Visitors Center Exhibit (… Stuffed Beaver in Visitor Center Exhibit (4259) Some Animal's (not a bear) Poop On The Sidewalk in… Visitor Center in Mammoth Hot Springs (4254) USA Map in Mammoth Hot Springs Hotel (4269) Our 'Alligator Mess' by W.A. West (4255) Mammoth Hot Springs Warning (4253) Mammoth Hot Springs Visitor Center (4272) Mammoth Hot Springs Visitor Center (4252) Fireplace in Mammoth Hot Springs Hotel (4271) Engineer's Office in Mammoth Hot Springs (4266) Engineer's Office in Mammoth Hot Springs (4264) Engineer's Office in Mammoth Hot Springs (4263) Chief - American Bison by Robert Bateman in Mammot… Big Horn Sheep in Mammoth Hot Springs Visitor Cent… Big Horn Sheep In Mammoth Hot Springs Visitor Cent… Phone Booths in Mammoth Hot Springs Hotel (4270) Elk in Mammoth Hot Springs Visitor Center (4260) 1907 Rules & Regulations (4262) Undine Falls on Lava Creek (1710) Tower Falls (4248) Tower Falls (1704) Near Tower Falls (1705) Visitors to Tower Falls (4249) Undine Falls on Lava Creek (1712) Undine Falls on Lava Creek (1711) Foliage (1713) Clogs (4250) Bison (4251) Bison (1709) Bison (1708B) Bison (1708A) Bison (1706) Bison (1708) Bison (1707) Yellowstone River at Dusk (4244) Yellowstone River at Dusk (4243) Yellowstone River at Dusk (4241) Yellowstone River at Dusk (4246) Yellowstone River at Dusk (4234) Yellowstone River at Dusk (4233) Crescent Moon Over Yellowstone (4247) Yellowstone River at Dusk (4240) Yellowstone River at Dusk (4239)