For the more adventurous type, Sierra Cave, which is a very short distance from Callao Cave offers a lot more excitement with numerous cave formations in its pitch-black environs. We had our lunch after the Callao Cave exploration and then set off for a short hike up from the road. The cave mouth is barred with gates but since we informed them ahead, Ted was able to secure the key. Sierra Cave is one of my favorite caves because it’s a perfect example of a living cave which is ideal for studying various rock formations. Below I’m sharing an excerpt from an article I wrote back in 2005 for a magazine. It was my first visit to the cave. Nothing much has changed since then which is a good thing. Insierra2 contrast to Callao Cave, its neighbor tells is a different story. Sierra Cave is a subterranean cave with a small opening and enveloped in darkness, nevertheless, within its pitch black environment, this cave is so alive and still breathing from the process of creation. A contact in advance to the local Department of Environmental and Natural Resources (DENR) office or Sierra Madre Outdoor Club (SMOC) is needed as they will provide guides in order to explore this cave.





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