Inside a glacier cave in Oregon’s Three Sisters Wilderness
© Marc Adamus/Aurora Photos
Inside a glacier cave in Oregon’s Three Sisters Wilderness
In central Oregon, three volcanic peaks in the Cascade Range are the central feature of the Three Sisters Wilderness area. Fourteen glaciers cover various parts of the wilderness area’s 286,708 mountainous acres, and caves form below the ice of some of them. Some hikers may miss the cave entrances completely. But an experienced guide might be just the thing if you’re interested in safely viewing these seasonal caverns and grottos. This time of year, prepare to get wet if you do.
Related Images
Emperor penguins in the Ross Sea, Antarctica
Biorock artificial reef off the Gili Islands, Indonesia
Green sea turtle with sardines near Playa Grandi, Curaçao
Manatees in the Ichetucknee River in Florida
Dr. Sylvia Earle explores Australia's Great Barrier Reef in a scene from 'Mission Blue'
Yunishigawa Kamakura Festival in Tochigi Prefecture, Japan
Sperm whale mother and albino baby swimming off the coast of Portugal
Spectral tarsiers in a ficus tree in Tangkoko Batuangus Nature Reserve, Indonesia
Bing Today Images
A delta in the Venetian Lagoon, Italy
May 17, 2025
Ålesund, Norway
May 17, 2021
Historic fishing warehouses in Trondheim, Norway
May 17, 2018
