Lapa Terra Ronca

Lapa Terra Ronca or Caverna Terra Ronca I (GO-063), is a dolomitic limestone cave inside the area of the Terra Ronca State Park, which houses the largest collection of caves and grottoes in the midwest with a number of about 200 being that only Terra Ronca and Angelica are open for the tourists. It is located about 400 kilometers from Brasília, midway between the municipalities of São Domingos, Posse e Guarani de Goiás, in the State of Goiás, Brazil. Thousands of years ago, a landslide caused its division into two parts. The first can be visited easily, but the second part requires a tour guide. It's called Terra Ronca II or Malhada, also of gigantic proportions. It has two skylights, one of them called Araras and a large gallery called Lovers' Hall decorated with rich stalactites and stalagmites and huge sand dunes crossed by the underground Lapa river.

Cave data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).