These two giant sinkholes, residing atop an 11,500 ft. mountain, was not found until 1961. Though it’s known they have their own ecosystems at the bottom, much remains unknown about the deep, dark depths of the structures.
These two giant sinkholes, residing atop an 11,500 ft. mountain, was not found until 1961. Though it’s known they have their own ecosystems at the bottom, much remains unknown about the deep, dark depths of the structures.
