Parque nacional Volcán Mombacho, National park and nature reserve in Granada Department, Nicaragua.

Volcán Mombacho rises about 10 km southeast of Granada, its lower and middle slopes covered in dense green vegetation and its upper right face cut by near-vertical streaks of reddish-brown rock. The summit holds three vegetation-filled craters, the largest deep and open to the south, and disappears into a grey-white cloud layer. A 1,500-metre trail network sits at the top, reached by a steep road ending at 1,200 m.

Mombacho is about two million years old. Its crater walls have a uniform texture, which suggests the cone was built from ash rather than lava flows. It has three vegetation-filled craters, the largest occupying the summit, deep and open to the south. The only historical event on record is a 1570 landslide that destroyed a small indigenous settlement of some 400 people on the south side.

The Fundación Cocibolca, a conservation group, manages the reserve and its staff recount local legends: spring water said to have magical powers, a hunter who loses the trail of a wounded animal, and a white-dressed old woman who guards the forest and vanishes in the mist. The eastern part of the park remains unexplored.

Access to the summit is by a steep road from the reserve entrance at the foot of the volcano: a truck makes the climb four times a day, and private vehicles must be 4x4 with a driver used to uphill driving. The 20-30 minute ascent ends at 1,200 m, where temperatures drop sharply, humidity is high and wind is constant, so bring a sweater. About 1,500 m of trails are laid out on the summit.

The Mombacho salamander (Bolitoglossa mombachoensis) was described in 1999 by Günther Köhler and McCranie and is known only from this volcano's cloud forest. The park also holds the Mombacho orchid (Maxillaria mombachoensis) and the butterfly Napeogenes tolossa mombachoensis, both found nowhere else.