Mount Lokon (Indonesian: Lo'kon), also known as Gunung Lokon, together with Mount Empung, is a twin volcano (2.2 km or 1.4 mi apart) in the Tomohon, Minahasa Regency, North Sulawesi, Indonesia, roughly 10 km (6 mi) south of Manado.
Lokon formed during a period of andesitic volcanism on ring fractures resulting from the Tondano caldera's early to mid-Pleistocene collapse.
Recently erupted material remains andesitic in composition [2] and consists of ash plumes and, less commonly, pyroclastic flows and lava domes.
Local residents were evacuated from a two and a half mile exclusion zone around the volcano.
The eruption of Mount Lokon in 1991 killed a Swiss hiker and forced thousands of people to flee their homes.