The Khyber Pass is a mountain pass in the northwest of Pakistan, on the border with Afghanistan. It connects the town of Landi Kotal to the Valley of Peshawar at Jamrud by traversing part of the Spin Ghar Mountains. An integral part of the ancient Silk Road, it has long had substantial cultural, economic, and geopolitical significance for Eurasian trade. Throughout history, it has been an important trade route between Central Asia and the Indian subcontinent and a vital strategic military choke point for various states that came to control it. The summit of the pass is 5 km (3.1 mi) inside Pakistan at Landi Kotal, while the lowest point is at Jamrud in the Valley of Peshawar. The Khyber Pass is part of Asian Highway 1 (AH1).