On Friday, the Carlsbad Caverns National Park took to Facebook to explain in great detail how rangers were forced to carefully remove “foreign detritus and molds” from the surface of the cave in The Big Room. The location is known as “the largest single cave chamber by volume in North America,” according to the National Park Service.

A bag of discarded Cheetos was full, but attracted wildlife and even grew mold on the cavern’s walls.

“The processed corn, softened by the humidity of the cave, formed the perfect environment to host microbial life and fungi,” NPS wrote in its Facebook post. “Cave crickets, mites, spiders and flies soon organize into a temporary food web, dispersing the nutrients to the surrounding cave and formations.”