NYT > Top StoriesChanging water levels and erosion are believed to have contributed to the collapse of the geologic feature, which was formed from 190 million-year-old Navajo sandstone, the National Park Service said.
Famed Double Arch Collapses in Glen Canyon National Recreation Area
NYT > Top StoriesChanging water levels and erosion are believed to have contributed to the collapse of the geologic feature, which was formed from 190 million-year-old Navajo sandstone, the National Park Service said.
NYT > Top StoriesChanging water levels and erosion are believed to have contributed to the collapse of the geologic feature, which was formed from 190 million-year-old Navajo sandstone, the National Park Service said.