Aiyang Tlang, Mountain summit in Thanchi, Bangladesh.

Aiyang Tlang is a summit in Bandarban district, near the Myanmar border, measured by GPS in November 2019 at 3,298 feet (about 1,005 metres). It lies in the Mowdok range, a cluster of peaks on the frontier.

The mountain was first precisely mapped in 2019 when a surveyor confirmed its exact elevation through GPS measurements. This documentation helped establish the peak's importance in the region's geography.

The peak's name comes from the Bawm language, and it was Van Rausang Bawm of the local Bawm community who identified the hill in the 1980s. Bawm villages in the hills around Bandarban still guide and host visitors heading for the summit, and the mountain is known to them as part of their home range on the Myanmar border.

Reaching this summit requires planning and assistance from local community members familiar with the terrain. Travel is easier during drier months when conditions are more stable for mountain access.

The summit sits approximately 300 meters from the Myanmar border and belongs to a cluster of peaks called Mowdok. This proximity to the border makes the location geographically distinctive within the region.