![2 The locations of the Callao Cave excavation units. Source: A. Mijares. | Download Scientific Diagram 2 The locations of the Callao Cave excavation units. Source: A. Mijares. | Download Scientific Diagram](https://www.researchgate.net/publication/315613225/figure/fig2/AS:475481737830404@1490375088808/The-locations-of-the-Callao-Cave-excavation-units-Source-A-Mijares.png)
2 The locations of the Callao Cave excavation units. Source: A. Mijares. | Download Scientific Diagram
![Cagayan - Exploring Callao Cave, my 2nd Spelunking Adventure | Blogs, Travel Guides, Things to Do, Tourist Spots, DIY Itinerary, Hotel Reviews - Pinoy Adventurista Cagayan - Exploring Callao Cave, my 2nd Spelunking Adventure | Blogs, Travel Guides, Things to Do, Tourist Spots, DIY Itinerary, Hotel Reviews - Pinoy Adventurista](https://2.bp.blogspot.com/-AC9ACrh80J8/TzvASGdMKlI/AAAAAAAAF8I/rw9IiTn0-Mc/s1600/00.jpg)
Cagayan - Exploring Callao Cave, my 2nd Spelunking Adventure | Blogs, Travel Guides, Things to Do, Tourist Spots, DIY Itinerary, Hotel Reviews - Pinoy Adventurista
CALLAO CAVE | cave, solutional cave | Callao Cave, Philippines ♥ • Callao Cave is one of the limestone caves located in the municipality of Peñablanca, Cagayan province, in the Philippines.... | By CTPH TOUR | Facebook
![Soft Reopening of Callao Cave Marks a New Beginning for Penablanca, Cagayan – Cagayan Valley and Northern Philippine Islands Soft Reopening of Callao Cave Marks a New Beginning for Penablanca, Cagayan – Cagayan Valley and Northern Philippine Islands](http://www.region2fun.ph/wp-content/uploads/2023/10/Callaso2.jpg)