The Khyber Pass: The chief mountain pass between Pakistan and Afghanistan, west of Peshawar. 33 miles (53 kilometers) long; 6,825 feet (2,080 meters) high.
The Bolan Pass: The pass is an 89-km (55-mi) stretch of the Bolan River valley from Rindli in the south to Darwāza near Kolpur in the north. It is made up of a number of narrow gorges and stretches.
A submarine canyon is a steep-sided valley that is cut into the bed's of the continental slopes and is an extension of the continental shelf and gains a height of 5 meters. The submarine canyons are found on the active margins and active margins and turbidity are denser and their erosion is triggered by the underwater landslides.
