The tehsil, covering approximately , is the largest in Mastung District by area and borders ten neighbouring tehsils. Dasht is bordered to the south by
Johan and
Mangochar Tehsils, to the west by
Khad Koocha Tehsil, to the northwest by
Quetta and
Quetta Saddar tehsils, to the north by
Khoast Tehsil, to the northeast by
Sharing and
Sangan Tehsils, and along most of its eastern boundary by
Mach Tehsil. It is largely
arid and mountainous, with elevations generally above and some peaks exceeding .
Seasonal streams, or
nalas, cross its rugged terrain, which features desert-like landscapes and sparse vegetation. Native plants include karir (
Capparis aphylla), milk broom (Periploca aphylla), and pipa (Caralluma tuberculata). Dasht is prone to natural hazards, including earthquakes, floods, and droughts. Its landscape includes stretches of the
Sulaiman Mountains, as well as desert and forest habitats, supporting a variety of flora. Vegetation is sparse and
xerophytic, consisting of thorny
shrubs, hardy bushes, occasional drought-resistant trees, and various
ephemeral plants that appear after rainfall. == Climate ==