Nepal, Nov. 10 -- While the Bhote Kosi-Trishuli disaster struck suddenly earlier this year, the glacier along the slope of Langtang Lirung had long been primed for deadly collapse by climate change.

The thawing of the underlying permafrost weakened the mountain's structural integrity, leading to the glacier collapsing to the valley floor and triggering the cascading disaster.

Global discourse after the event focused on Nepal's lack of adaptive capacity, infrastructure and governance, with little attention on the underlying drivers of a changing climate. The footage that captured the immediate destruction of rushing water and debris, referred to as a 'mountain tsunami', gives insight into the realities of this impossible adaptation task...