Lake Gunung Tujuh, Volcanic crater lake in Kerinci Seblat National Park, Indonesia.

Lake Gunung Tujuh is a volcanic crater lake in Kerinci Seblat National Park, Jambi, at 2,005 meters elevation. Its forested rim is formed by seven peaks, the highest being Mount Tujuh at 2,732 meters. The lake is fed by springs on the surrounding mountains, so its water never runs dry.

Mount Tujuh is geologically old, yet the lake it holds is young; the crater filled with water in relatively recent geological time. The name Danau Gunung Tujuh refers to the seven peaks of the forested rim, the tallest rising to 2,732 metres. The lake lies within Kerinci Seblat National Park, part of the UNESCO World Heritage Tropical Rainforest Heritage of Sumatra.

Local fishermen work the lake daily using methods passed down through generations, and their wooden boats and bamboo traps remain a familiar sight across the water. This fishing community has shaped how the lake is used and valued by people living in the surrounding villages.

The trail starts at the Kerinci Seblat National Park gate and takes two to three hours to reach the lake. Hikers can choose a gentler but longer route or a shorter, steeper one; both merge before a sharp descent to the shore. Villagers from Pelompek village, in Kerinci Regency, Jambi, serve as guides.

The water stays cold throughout the year, and despite fallen trees scattered around the basin, the surface remains remarkably clear and free of floating debris. This clarity is surprising given the forested surroundings.