The Cavinti Underground river and caves complex is yet another of Laguna’s hot ecotourist destinations. Located in Brgy. Paowin in the municipality of Cavinti, the complex along with the accompanying Fall have rapidly grow to become a popular tourist destination. To see the cave you must first obtain a permit and sit for a brief safety lecture (orientation). All this is done at the Bumbungan Eco Park which acts as the take-off point.