Bisoke volcano, 3,711m above sea level is located on the Democratic Republic Congo and Rwanda border. An eruption in 1957 formed two small cones on the north flank of the volcano, 11km from the summit, which supports a beautiful crater lake, lake Ngezi.
Hiking to Crater Lake requires four hours up a steep trail from the Bisoke departure point to reach the summit. The walk around the Crater Lake rim is highly recommended. Allow seven hours for the entire trip. Lake Ngezi, a small, shallow crater lake, is the easiest hike in the park; it takes only a 3-4 hour around- trip from the Bisoke departure point.