San Carlos Cave: Of Speleothems and Subterranean River
San Carlos Cave is a lesser known technical spelunking destination in Peñablanca, Cagayan which showcases variety of speleothems, easy path
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Pinoy Spelunker
A personal non-profit new site which aims to be a source for spelunkers in the cave-rich Philippines.
Peñablanca
Sierra Cave: An Underdog Cave in Peñablanca
Sierra Cave is one of the few explored among the 300+ caves in Peñablanca, Cagayan, recently being dubbed as the
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Callao Cave: Home of the Asian Archaic Hominin
Callao Cave in Peñablanca, Cagayan is famous of its seven chambers, church inside one of them, rich history, artefacts, and
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