Sima de las Cotorras is a natural sinkhole caused by large-scale water filtration and inhabited by families of parrots that live in the nearby trees. Imagine the spectacle of wild parrots swooping in and out of this sinkhole. The walls of the holes also contain rock paintings, a trace of the ancient Zoque culture. Sima de las Cotorras (Sinkhole of the Parrots) is operated by locals and is a place to explore, observe the birds and wildlife, relax in the local cabins, and enjoy the regional cuisine.
There is an eco-tourism infrastructure in place so you can go rappelling, hiking, and do some external routes. The descent is a free-fall rappel of about 140 feet to the deepest point of the pit, during which you can see the cave paintings. At the bottom is a cave 70 meters deep with lots of stalactites and stalagmites. You can also do the perimeter route, walk down to see the paintings and the flora and fauna. This hike takes you to about 30 meters above the bottom of the pit.