❝ Devil's Bathtub ❞ Old Man's Cave Unit, Hocking Hills State Park, Ohio, USA Photography: Amy J Strahler ☛ Devil's Bath Tub is a fascinating piece of streambed in the Upper Gorge area of the Old Man's Cave unit of Hocking Hills State Park in southeast
Ice cave in the Skaftafell National Park in Iceland. Ice caves collapse and new ones form as each glacier grinds slowly towards the sea. Local guides can help you (without dying) find one. (Visit Skaftafell National Park in Iceland.
Avalanche Gorge at Glacier National Park in northwestern Montana. The hike to Avalanche Lake takes you along Avalanche Creek through Avalanche Gorge to a beautiful alpine lake. Photo: Galyna Andrushko on Shutterstock