Mount Rinjani is the second highest volcano after Mount Merapi, in the history of Mount Rinjani is Mount Samalas, previously only known as Mount Samalas with an altitude 4200+100 masl ( 13780+330 ft ).
Mount Rinjani erupted for the first time in 1846 while for the last eruption in 2015
it is known that Mount Rinjani erupted 11 times, the next eruption occurred in the caldera, namely Mount Baru Jari and Mount Rombongan or referred to as Mount Mas and in general the eruptions released lava and volcanic ash and in the form of steam gas. in 1943 there was an earthquake and volcanic ash rain for 7 days, this event was a natural disaster on the island of Lombok which destroyed all plants and houses.

Mount Samalas was replaced with the name Mount Rinjani with an altitude of 3,726 masl, Mount Rinjani formed a circular caldera around Lake Segara Anak, and a baby volcano of Mount Merapi grew in the middle of the lake, namely a Gunung Baru Jari. Gunung Barujari is Mount Merapi which is still active today, Mount Barujari the last erupted in 2015. Mount Rinjani is a place for Hindus to perform rituals and also a place for worship events to be held once a year, because Mount Rinjani has There are many places that are believed to be sacred, such as the name Gua Susu, Aik Kalak Jembangan and Pancoran Emas. This third place is where Hindus and local people perform rituals when they have certain intentions. in 1980, the local people made hiking trails for foreign tourists because Mount Rinjani became famous through local climbers who often held events on Mount Rinjani, after Mount Rinjani was recognized as a Geopark by UNESCO and the government of Mount Rinjani National Park, made an association for Trekking organizers to form a Trekking package to make it easier for climbers to climb Mount Rinjani. Previously, climbing Mount Rinjani could only be passed via the Senaru route and camping at Senaru crater and on the lake, the climbers started the journey to the top from the lake within 6 hours, and returned to the lake again after finishing climbing to the top, as time went on in 1990 many climbers followed the trail of former local climbers who performed rituals from Sembalun, and until now the trail Sembalun is the most famous, because the distance to the top of Rinjani is the closest route.