Last summer, Dave Morton set out with Adam Knoff to reach the summit of Pakistan’s K2 unsupported and without oxygen, using one of the peak’s most difficult routes. During the 40-day expedition, both climbers were put to the test on one of the world’s most dangerous mountains.

Last summer, Dave Morton set out with Adam Knoff to reach the summit of Pakistan’s K2 unsupported and without oxygen, using one of the peak’s most difficult routes. During the 40-day expedition, both climbers were put to the test on one of the world’s most dangerous mountains.

Last summer, Dave Morton set out with Adam Knoff to reach the summit of Pakistan’s K2 unsupported and without oxygen, using one of the peak’s most difficult routes. During the 40-day expedition, both climbers were put to the test on one of the world’s most dangerous mountains.

Last summer, Dave Morton set out with Adam Knoff to reach the summit of Pakistan’s K2 unsupported and without oxygen, using one of the peak’s most difficult routes. During the 40-day expedition, both climbers were put to the test on one of the world’s most dangerous mountains.

Last summer, Dave Morton set out with Adam Knoff to reach the summit of Pakistan’s K2 unsupported and without oxygen, using one of the peak’s most difficult routes. During the 40-day expedition, both climbers were put to the test on one of the world’s most dangerous mountains.

Last summer, Dave Morton set out with Adam Knoff to reach the summit of Pakistan’s K2 unsupported and without oxygen, using one of the peak’s most difficult routes. During the 40-day expedition, both climbers were put to the test on one of the world’s most dangerous mountains.

Last summer, Dave Morton set out with Adam Knoff to reach the summit of Pakistan’s K2 unsupported and without oxygen, using one of the peak’s most difficult routes. During the 40-day expedition, both climbers were put to the test on one of the world’s most dangerous mountains.