There's A Whole Other World To Explore Under Wyoming's Sinks Canyon State Park

For years, visitors have been intrigued that the Popo Agie River disappears deep beneath the Sinks Canyon State Park.

It turns out that over the eons, the river had formed a network of caves through the Madison limestone that then lay undiscovered for hundreds of years and can now be explored by a lucky few.

“The state park staff actually discovered the cave system decades ago,” State Superintendent and Interpretive Ranger Jessica Moore said. “It was a fluke that one of the staff noticed some water coming out of the side of the hillside. They started poking around and found a hole in the ground.”

Curious, the employee squeezed into the hole and discovered an entire cave system that was beneath the canyon. Over the years, for safety, the entrance was gated and closed to public ac