Downhill

Mountain bikers go on a trip to Chile, and spend half the movie just being douchebags, then encounter the local criminal element and get victimized and pursued through the woods for the next 1/3 of the movie, before the last half of the third act when they finally start the action and the cool monsters and supernatural stuff. Captivity/pursuit flick, the kind of movie where a lot of the audio is just people screaming or whimpering, and would be kind of a good one if they hadn't waited until the last 15 minutes of the movie to get interesting. Had kind of "Cannibal Holocaust" exploitation-flick-in-the-jungle feel once it finally got going, but the 85% of the movie where you're waiting for that was just tedious. Filmmakers gotta learn, you can't just pile on a bunch of cool shit at the very end.