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.

MACKINAC ISLAND, MI – The viewing platform for Mackinac Island’s most famous rock formation will soon close. The upper viewing area of Arch Rock, known as the Arch Rock Plaza, will close on Monday, ...

Students and faculty traversing the Red Gables Campus of the Ensworth School pass through a sandstone segmental archway that hints at a piece of Nashville’s past — and present — that isn’t in their ...

The upper viewing area of Arch Rock, known as Arch Rock Plaza, will be closed from Sept. 11 until April of next year for the construction of the Milliken Nature Center. The closure will be for all ...