Mae Sot (, ; , ; , ; ) is a district in western Thailand that shares a border with Myanmar to the west. It is notable as a trade hub and for its substantial population of Burmese migrants and refugees. The town is part of Tak province and is the main gateway between Thailand and Myanmar. As a result, it has gained notoriety for its trade in gems and teak, as well as black market services such as human trafficking and drugs. Neighbouring districts are (from north clockwise): Mae Ramat, Mueang Tak, and Phop Phra. The Moei River serves as a natural border between Mae Sot and the Burmese town of Myawaddy. Mae Sot lies 492 km north-northwest of Bangkok. Gateway to Myanmar Mae Sot is the where Asian Highway AH1 links Thailand and Myanmar. It is one of only three transnational roads and cross-border points across the Tenasserim Hills to Myanmar, along with Three Pagodas Pass and Phu Nam Ron. The Thai-Myanmar Friendship Bridge crossing the Moei River was constructed in 1997 completing the link between the two countries. As a gateway city, Mae Sot has its own domestic airport. Some airlines such as Phuket Air have cancelled their flights between Bangkok and Mae Sot. Link to India India's foreign minister met with Myanmar's construction minister in Delhi on 22 February 2012, and spoke about opening a highway between Moreh, India, and the Myanmar-Thai border near Mae Sot. Economy Trade with Myanmar constitutes the largest portion of Mae Sot's economy. It has an established market for commodities such as wholesale gems and teak. Most of the town's industries are supported by Burmese migrants who work in sweatshops and factories throughout the region. The Thai-Myanmar Friendship Bridge is the primary gateway for trade with Myanmar. The border region, several kilometres west from central Mae Sot, includes the Rim Moei Market that deals in imported goods and woodwork. The town is a hub of black markets in smuggling, human trafficking, and narcotics. Zinc mining contributed to the district's economy until halted due to environmental impacts in three tambons: Phra That Pha Daeng, Mae Tao, and Mae Ku. Tak Special Economic Zone In early-2015 the government announced the creation of the Tak Special Economic Zone (SEZ). The SEZ, first proposed in 2004, is projected to occupy a total of 2,182 rai of forest land and public areas in tambon Tha Sai