The rights to an Irish documentary about the tragic deaths of 11 mountain climbers in the worst K2 climbing disaster in history has been picked up by a well-known US distribution company.

The Summit, an Irish feature-length documentary, produced and directed by Nick Ryan, chronicles the story of 24 climbers from several international expeditions who converged on High Camp of K2, the last stop before the summit of the most dangerous mountain on earth.

Forty-eight hours later, 11 had been killed or had vanished, making it the worst K2 climbing disaster in history.

The documentary has been selected to screen in competition at the Sundance International Film Festival, and is in contention for the best documentary prize, to be unveiled next Saturday.

Sundance Selects, a subsidiary of IFC, which is owned by American media giant AMC, bought the US distribution rights over the weekend.

The Summit was produced by Image Now Films and Pat Falvey Productions, in association with Passion Pictures, Diamond Docs and Fantastic Films. It is funded by the Irish Film Board, RTÉ, the Broadcasting Authority of Ireland and the BBC.