Toba Kakar Range
The Toba Kakar Mountains are a Southern offshoot of the Himalayas in the Balochistan region of Pakistan. The historical route through the mountains is known as the Bolan Pass, and though the mountains are sometimes inaccurately referred to as the "Brahui Mountains", Brahui is the term for an ethnic group that lives in the region, and their language.
The mountains originally received media attention in August, 1979; when evidence emerged that Pakistan may be using them as a potential workspace towards development of nuclear weapons. Again in April, 1981, the United States government raised concerns, this time with Senator Alan Cranston referring specifically to a nuclear test site, built into the side of the mountains, 40 kilometres from Afghanistan. As a result of this, Congress amended existing legislation that would terminate finanicial assistance to Pakistan in the event of any nuclear test, so that it could not be waived by the President.
In late 2004, the United States announced that they now knew the location of Osama bin Laden, a 16-square kilometre square in the Toba Kakar mountains; though they were hesitant to enter the area referring to it being "another Vietnam". Though Pakistan's Major Gnl Shaukat Sultan said the claims of bin Laden being in that mountain range were "ridiculous" and without basis.