Callao Caves
September 2nd 2017 Callao Caves in PeƱablanca, Cagayan Valley.
Located at the foothills of Western Sierra Madre. This is only one of the over 300 known caves in the area. (Cagayan is dubbed as the "caving capital of the Phils.)
Callao Cave has a total of nine chambers, seven of which can be explored by visitors, the other two chambers were closed off by an earthquake during the 80's.
It's largest chamber soars to
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