Three-day event features more than 55 new documentaries about biking, climbing, surfing, kayaking, environmental activism, eco-awareness, conservationism and humanitarianism.

Adrenaline junkies, outdoor lovers and documentary film buffs have three thrill-seeking days headed their way Sept. 18-20 in the form of the Throckmorton Theatre’s 4rd Annual MountainFilm adventure and environmental documentary festival.

The event features more than 55 films plus guest speakers and discussion panels. The event kicks off with a screening of Meru, which chronicles three men’s attempt to ascend Meru (also known as Shark’s Fin), a formidably jagged peak in India (see trailer below), and concludes with a screening of Unbranded (see trailer below), which documents a young Texas horseman’s plan to prove the worth of wild horses and raise awareness about their plight by adopting, training and riding wild horses 3,000 miles from the Mexican border to Canada through some of the American West’s wildest terrain.

Click here for the full festival schedule. Single event tickets go on sale August 26. Three-day festival passes are on sale now.