Source: UNESCO World Heritage
A Visit Philippines 2003 postcard with a preprinted stamp of St Paul Underground River. Thanks to Jonathan of Philippines.
Postcard 2This "Underground River" is located inside the Saint Paul's National Park, Palawan, Philippines. It has been short listed for online voting for the New Seven Wonders of Nature. Nice bird stamps. Thanks to Adriano of Palawan.
Underground River, Sabang, Palawan. Thanks to Jenny of Philippines.