The power of water...

Brazil, Itacarambi (Peruaçu Valley) Janelão Cave.

Brazil, Itacarambi (Peruaçu Valley) Janelão Cave.

Brazil, Itacarambi (Peruaçu Valley) Janelão Cave.

Brazil, Itacarambi (Peruaçu Valley) Brejal Cave.

Brazil, Itacarambi (Peruaçu Valley) Janelão Cave.

Brazil, Itacarambi (Peruaçu Valley) Troncos Cave.

Brazil, Itacarambi (Peruaçu Valley) André Arch.

Brazil, Itacarambi (Peruaçu Valley) Bonita Cave.

Brazil, Itacarambi (Peruaçu Valley) Bonita Cave.

Brazil, Itacarambi (Peruaçu Valley) Bonita Cave.

USA, Arkansas

Blanchard Springs Cave.

USA, Arkansas

Blanchard Springs Cave.

USA, Arkansas

Blanchard Springs Cave.

USA, Missouri

Marvel Cave.

Brazil, Chapada Diamantina

Pratinha Cave.

Brazil, Ramalho Ridge

Pau de Colher Cave System.

Brazil, São Domingos

Terra Ronca II Cave.

Brazil, Ribeira Valley

Tira Prosa Cave.

Brazil, Morro do Chapéu

Brejões Cave.

Brazil, Lagoa Santa

Túneis Cave.

Brazil, Lagoa Santa

Túneis Cave.

Hungary, Budapest

Jozsef-Hegyi Cave.

Brazil, Cordisburgo

Morena Cave.

Brazil, Pains

Santuário Cave.

Brazil, Pains

Santuário Cave.

Brazil, Pains

Santuário Cave.