One of Utah’s breathtaking landmarks has been altered forever due to the collapse of an arch at the Glen Canyon National Recreation Area.

The Double Arch, a popular geological site located in Rock Creek Bay of Glen Canyon, succumbed to natural forces on Thursday, as reported by the National Park Service. Fortunately, there were no injuries resulting from the collapse of this delicate sand feature.

Michelle Kerns, the superintendent of Glen Canyon, stated that this incident serves as a significant reminder of the importance of protecting the mineral resources surrounding Lake Powell.

“These natural structures have a finite lifespan and can be affected by human actions,” Kerns expressed in a statement. “Although the specific cause of this collapse remains unknown, we will persist in our efforts to safeguard the resources of Lake Powell for the enjoyment of future generations.”

Kerns also encouraged visitors to appreciate the natural beauty of Glen Canyon but to always remember the principle of “leave no trace.”

Here’s what you need to know.

What caused the collapse of Utah’s Double Arch?

While the exact reason for the collapse is not yet clear, the NPS suspects that changing water levels and erosion from wave action may have played a significant role in its deterioration.

The NPS noted that this delicate sandy formation had long been undergoing “spalling and erosion” due to weather events, such as wind and rain, since it was formed.

How was Utah’s ‘Double Arch’ formed?

The Double Arch, affectionately known by various names such as the “Toilet Bowl,” “Crescent Pool,” and “Hole in the Roof,” was formed from 190-million-year-old Navajo sandstone.

The sandstone that comprises the Double Arch was deposited between the late Triassic and early Jurassic periods, as per the NPS.