No scientific survey has yet been conducted in the area but recent expedition to the mountain by the Nueva Vizcaya Mountaineering Society, Inc. led by NVMSI Founder Gene Basilio Jr. and President Raymond Zamora in September 2012 proved that civets, monkeys, and other wildlife still thrive in the forests of Mount Guiwan. Its streams still have abundant eels. A waterfalls estimated to be one km long from its first drop down to the bottom flows from near the summit of the mountain.