Ras Koh Hills
![Satellite image of geographic area. Ras Koh Hills located in the lower-left quadrant.](/Images/godic/202502/06/Pakistan_Mountain_Ranges_BMNG4907.jpg")
The 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 Urdu. 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.