Lomanthang is a rural municipality in Mustang district in Gandaki Province of western Nepal. It is located at the northern end of the district, bordering the Tibet Autonomous Region of China to the north and Dalome rural municipality of Mustang in the south.
Lo is the northern two-thirds of Mustang district, culturally and linguistically influenced by Tibet, while the southern third is called Thak, the homeland of Thakali people who speak a different language and have a synthesis of Tibetan and Nepalese culture. Recently a series of at least twelve caves were discovered north of Annapurna and near the village, decorated with ancient Buddhist paintings and set in sheer cliffs at an elevation of 14,000 feet. The paintings show Newari influence, dating to approximately the 13th century, and also contain Tibetan scripts executed in ink, silver and gold and pre-Christian era pottery shards. Explorers found stupas, decorative art and paintings depicting various forms of the Buddha, often with disciples, supplicants and attendants, with some mural paintings showing sub-tropical themes containing palm trees, billowing Indian textiles and birds.