Follow Nick Bullock and Paul Ramsden on their first ascent of Nyainqentangla South East, via the North Buttress. Rather than attempt the peak in a fast and light style, the pair carried heavy packs, including tents and bivouac gear for the entire ascent.

"I'm not making this film for anyone else, apart from me. [It's] to remind myself, never, ever, ever, ever, ever to do this again," said Bullock after their ascent.

• Related: The First Ascent of Greenland's Mirror Wall