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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
New species of human discovered in Philippines Callao Cave | CNN
Callao Cave Adventure - A whole new world travel Express
Cagayan - Exploring Callao Cave, my 2nd Spelunking Adventure | Blogs, Travel Guides, Things to Do, Tourist Spots, DIY Itinerary, Hotel Reviews - Pinoy Adventurista
Callao Cave Eco-Tourism Zone | Guide to the Philippines
Callao Cave is one of the limestone caves located in the Municipality of Peñablanca, Cagayan province, in the Philippines… | Tourist attraction, Tourist, Ecotourism
Callao Cave System, one of the largest cave systems in the Philippines is here at Cagayan : Schadow1 Expeditions | A travel and mapping resource for the Philippines
Historic Callao Cave reopens with free entrance fee until October 27