CAGAYAN | Callao Cave, Seven Chambers of Light and Darkness - Lakad Pilipinas
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File:Callao Cave Penablanca.jpg - Wikimedia Commons
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The Chronicles of Mariane: Inside Cagayan's Callao Cave
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File:Callao Cave Chapel.jpg - Wikimedia Commons
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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
