The Kashmir Smast caves , also called Kashmir Smats , are a series of natural limestone caves , artificially expanded from the Kushan to the Shahi periods , situated in the Babozai and Pirsai mountains in the Mardan Valley in Northern Pakistan .
The Kashmir Smast caves are a series of natural limestone caves , artificially expanded from the Kushan Empire to the Shahi periods , in the Babozai mountains in the Mardan Valley in Northern Pakistan .