Callao Cave is perhaps the most popular tourist attraction of Cagayan Province. I first came to know about this place when I went to a travel expo a few years back. The image of a chapel in a cavern captivated me. I knew I must see this place.
Callao Cave is one of the many caves in Peñablanca town. The discovery of a 67,000-year-old human fossil in the cave system of Callao made my trip even more interesting.
