Changing 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.
View Original Source Here
Changing 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.
View Original Source Here
