Cave Zones: Entrance, Twilight and Dark Zones
Cave zones are mainly divided into entrance, twilight and dark zones. The presence or absence of light, temperature, and fauna are the main defining criteria.
Read MoreA personal non-profit new site which aims to be a source for spelunkers in the cave-rich Philippines.
Cave zones are mainly divided into entrance, twilight and dark zones. The presence or absence of light, temperature, and fauna are the main defining criteria.
Read More