Caverna da Tapagem

Caverna da Tapagem, also Caverna do Diabo, is a cave located within the Caverna do Diabo State Park next to the Alto Ribeira Tourist State Park, in the municipality of Eldorado, Iporanga, 280 km from São Paulo, Brazil. It is the second longest cave in the state of São Paulo and also the highlight of what the local guides call "Circuit Disneyland," which is a series of family attractions that people of all ages can enjoy.

Source: Wikipedia