The southern area of central Java island is covered by heavily karstified limestone. There are numerous river cave about 50 m below the surface, with numerous collapses which make them accessible. As a result this is the cave tourism center of the island. Most venues concentrate on cave tubing in two river caves though, Goa Pindul and Goa Kalisuci.
Goa Asri
Cerme Cave
Gua Gelatik
Goa Jomblang
Goa Kalisuci
Goa Kiskendo Jatimulyo
Paleo Stone Age Gunungkidul
Gua Pindul
Goa Tanding
Goa Watu Joglo