Ras Koh Hills is a range of granite hills forming part of the Sulaiman Mountain Range in the Chagai District in Pakistan 's Balochistan province . The word " Ras " means " gateway " and the word " Koh " means " mountain " in Balochi . Ras Koh , therefore , means " Gateway to the Mountains . " Pakistan 's first nuclear tests were carried out in the Ras Koh Hills on 28 May 1998
Pakistan 's first nuclear tests
Chagai-I
Ras Koh Hills