The main attraction of the national park is, of course, the volcano. It has an almost flawless cone shape, with an elevation of over 5,000 feet. It's been the most active volcano in Costa Rica since 1968, when it erupted after being dormant for 400 years.

The national park has beautiful trails around the primary forest, where one can notice a transition from a devastated zone into a growing forest. You can walk on easy trails, where you can find some native animals, such as spider monkeys, white-faced capuchins, howler monkeys, sloths, raccoons, coatis, agoutis, serpents, lizards, as well as a large variety of birds.