Wall Arch, a natural sandstone arch in the Arches National Park in the state of Utah, U.S., has collapsed. One of the most photographed arches in the Park has fallen late Monday or early Tuesday.

One of the biggest arches in the park’s over 2,000 arches, Wall Arch was situated along Devils Garden Trail, one of the most popular in the park, and one of the most popular stopping points for photographers.

Authorities said the collapse was caused by forces that will eventually bring down other arches in the park as well – gravity and erosion.

"They all let go after a while," Paul Henderson, the park's chief of interpretation, said Friday.

Wall Arch, first reported and named in 1948, measures 71 feet wide by 33 and half feet high. It was made of Entrada Sandstone, specifically the member known as Slick Rock. Its collapse, the first of a major arch in the park since sections of Landscape Arch fell in 1991, temporarily blocked Devil’s Garden Trail.

Wall Arch was ranked 12th among the park’s estimated 2,000 arches.

National Park Service and the Utah Geological Survey officials went to the park for inspections. They reportedly noted stress fractures in the remaining formation in the remaining formation which may cause additional collapse in the future. The debris from the collapse still has to be cleared away to make it safe for visitors to pass.