glaciate

But neither have been hit harder than Pakistan's mountainous north, home to Khyber Pakhtunkhwa and one of the most glaciated areas in the region.

Northern Pakistan is also one of the most glaciated areas in the region, but these are rapidly thinning and retreating because of climate change - meaning rocks, soil, and other debris can be dislodged.

The rugged, remote region was hours from any towns, and featured low-lying hills, steep alpine cliffsides, and "even glaciated terrain", he said.

However, he emphasizes that the measurements cannot distinguish between methane from glaciated regions and methane from wetlands.

Taiwan's central mountain range is one of the steepest landscapes on Earth and has one of the highest erosion rates of any place outside glaciated or human-influenced areas, Carr said.