The Siahan Range is primarily made up of limestone and sandstone and was formed when the north western Indian Plate collided with the Eurasian Plate .
The Siahan Range is a mountain range in the central part of Balochistan Province of southwestern Pakistan .
The mountain range   is primarily made up of limestone and sandstone and was formed when the north western Indian Plate collided with the Eurasian Plate .
The Siahan Range is a mountain range in the central part of Balochistan Province of southwestern Pakistan .