Gruta do Centenário

Gruta do Centenário (English: Centenary grotto) (MG-1081), is a cave located in the municipality of Mariana, in the state of Minas Gerais, Brazil. It is the largest and deepest quartzite cave in the world, and second in the country in terms of unevenness. Other caves which are part of the same system have now been partially explored.

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