Yellowstone NP geology guide, USA, 1998
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Excursion guide, calderas, geothermal springs and geysers, Upper Geyser Basin, Old Faithful, Norris Basin, Mammoth Hot Springs travertine terraces, Yellowstone Canyon, Mud Volcano.
Excursion guide, calderas, geothermal springs and geysers, Upper Geyser Basin, Old Faithful, Norris Basin, Mammoth Hot Springs travertine terraces, Yellowstone Canyon, Mud Volcano.