Paul J. Thompson:
West Thumb Mudpot
Paul J. Thompson:
West Thumb Hotspring
Paul J. Thompson:
Runoff from the Last Hotspring
Paul J. Thompson:
Reflective Hotspring & West Thumb
Paul J. Thompson:
Tiny Hotspring @ West Thumb
Paul J. Thompson:
West Thumb Bacterial Mat
Paul J. Thompson:
Lakeside Hotsprings
Paul J. Thompson:
Fishing Cone Geyser
Paul J. Thompson:
Close-up of Fishing Cone Geyser
Paul J. Thompson:
More Lakeside Geyser
Paul J. Thompson:
West Thumb Rock Overhang
Paul J. Thompson:
Boardwalk @ West Thumb
Paul J. Thompson:
Hotspring Rippling Water
Paul J. Thompson:
Hotspring Edge @ West Thumb
Paul J. Thompson:
Andrea the Tour Guide
Paul J. Thompson:
West Thumb Silver Lining
Paul J. Thompson:
West Thumb Silver Lining with Trees
Paul J. Thompson:
West Thumb Mud Pool
Paul J. Thompson:
West Thumb Chipmunk
Paul J. Thompson:
Pretty Bird @ West Thumb
Paul J. Thompson:
Mudpot Mountain @ West Thumb