Visitors on the Navajo Loop Trail look out at hoodoos overlooking Bryce Amphitheater in Bryce Canyon National Park, Utah.

Visitors walk along the Navajo Loop Trail below Boat Mesa (top L) and hoodoos overlooking Bryce Amphitheater in Bryce Canyon National Park, Utah.

Hoodoos are viewed from Sunset Point overlooking Bryce Amphitheater in Bryce Canyon National Park, Utah.

Visitors take a selfie in front of hoodoos named Thor's Hammer and the Three Sisters (R) along the Navajo Loop Trail from Sunset Point overlooking Bryce Amphitheater in Bryce Canyon National Park, Utah.