Mount Rainier National Park

Astonishing photos of "rainbow ice caves" at Mount Rainier National Park in the United States have prompted the National Park Service to issue a warning about the dangers of exploring these caves.

A 70-year-old hiker who died of hypothermia in rugged terrain in Mount Rainier National Park over the weekend was experienced, prepared and knew the mountain well after having written dozens of stories about treks through the area.

Officials with Mount Rainier National Park in the U.S. say six climbers are presumed dead after helicopters detected pings from emergency beacons buried in the snow and a debris field that may indicate an avalanche.

Astonishing photos of "rainbow ice caves" at Mount Rainier National Park in the United States have prompted the National Park Service to issue a warning about the dangers of exploring these caves.

A 70-year-old hiker who died of hypothermia in rugged terrain in Mount Rainier National Park over the weekend was experienced, prepared and knew the mountain well after having written dozens of stories about treks through the area.

Officials with Mount Rainier National Park in the U.S. say six climbers are presumed dead after helicopters detected pings from emergency beacons buried in the snow and a debris field that may indicate an avalanche.