Mount Rinjani

Mount Rinjani (Indonesian: Gunung Rinjani; Sasak: ᬕᬸᬦ᭄ᬗᬸᬂ᭞ᬭᬶᬦ᭄ᬚᬦᬶ, romanized: gunong rinjani) is an active stratovolcano situated in regencial North Lombok of West Nusa Tenggara province on the Indonesian island of Lombok. It reaches an elevation of 3,726 metres (12,224 ft), making it the second-highest volcano in Indonesia and the highest point in the province of West Nusa Tenggara. Adjacent to the volcano is a caldera measuring approximately 6-by-8.5-kilometre (3.7 by 5.3 mi), which contains the crater lake Sagara Anak (lit. 'Child of the Sea' (in Sasak)) — named for its striking blue coloration reminiscent of the ocean. The lake lies at an elevation of around 2,000 metres (6,600 ft) above sea level and is estimated to be about 200 metres (660 ft) deep. The caldera also features several hot springs. Mount Rinjani and its crater lake hold significant spiritual importance for the indigenous Sasak people and certain folk religious communities, serving as sites for various religious ceremonies. In April 2018, the United Nations Educational, Scientific and Cultural Organization (UNESCO) recognized the Mount Rinjani Caldera as part of the Global Geoparks Network. Notably, the volcano's eruption in 1257 is considered one of the most powerful global volcanic events of the last 2,000 years.