2. Callao Cave – Peñablanca, Cagayan

Derived from the word ‘callado’ which means calm, Callao Cave gave justice to its name. The cave is very much well known for it’s limestone formations. Aside from the limestone attraction, the cave also have six different chambers: Aviary Room, Divine Room, Cream Room, Jungle Area, Sun Room, and Adventurous Area.

This majestic cave is situated at the sleepy town of Peñablanca.