To Hold A Mountain, which won this year’s World Cinema Grand Jury Prize for documentary film at Sundance, is set to release at New York’s Film Forum on December 16. Check out the trailer below.

Here’s the synopsis:

In the remote highlands of Montenegro, a shepherd mother and daughter proudly defend their ancestral mountain from the threat of becoming a NATO military training ground, stirring memories of the violence that shattered their family.

The film is co-directed by Biljana Tutorov and Petar Glomazić.