Referred to as the "Queen of Hills"[1][2] and the "Roof of Rangamati",[3] the valley is known for its greenery and dense forests, situated at an elevation of 1,800 feet (550 m) above sea level.

[1] Previously considered one of the most remote regions due to its challenging steep terrains and lack of significant economic activity,[4] the valley has settlements dating back to 1885.

It falls under the administrative jurisdiction of Baghaichhari Upazila in the Rangamati Hill District, situated about 70–80 kilometres (43–50 mi) from Khagrachhari.

[5][4] The inhabitants of Sajek Valley comprise various ethnic minority groups, including the Chakma, Marma, Tripuri, Pankho, Lushai, and other indigenous communities.

Covering a distance of approximately 70 kilometres (43 mi) from Khagrachhari to Sajek, the main mode of transport is four-wheelers known as chander gari (Bengali: চান্দের গাড়ি or চাঁদের গাড়ি), which visitors typically hire for group travel.