The nearly circular-shaped Lombok Island with its 70-kilometre ‘tail’ of a peninsula, is one of the Sunda Kecil Islands, located between Bali and Sumbawa. The geology of Lombok Island is dominated by Quaternary calc-alkaline volcanoes covering the Neogene clastic sedimentary rocks, the Oligo-Miocene volcanics and the Palaeogene-aged intrusive igneous rocks. The formation of the volcanic complex is due to the subduction of the Indian Ocean tectonic plate under the edge of the South East Asia tectonic plate. The Sasak population of Lombok is multi-ethnic and multicultural. The diversity of the Sasaks’ cultural heritage is reflected in buildings such as temples and old mosque.