While they remain a part of our cinematic fabric, one doesn't expect to see a modern cowboy movie because, well, one doesn't really think there are many cowboys out there these days.

While they remain a part of our cinematic fabric, one doesn't expect to see a modern cowboy movie because, well, one doesn't really think there are many cowboys out there these days.

"Unbranded" is not only a modern-day cowboy story, it's a documentary - and a crowd-funded one, at that.

The doc follows four friends on a journey across 3,000 miles of the western U.S. as they attempt to travel from the Mexican border to the Canadian border on horseback.

These aren't just any horses' backs they're horsebacking on. These are mustangs, the collective name given to wild horses such as those that populate the West.

In addition to the epic adventure undertaken - after seeing this and the mountain-climbing documentary "Meru," I'm feeling like I couldn't survive a day in either of these scenarios - "Unbranded" delves into the fight between ranchers and activists to determine the fate of the population of wild horses.

"Unbranded" features some expectedly gorgeous vistas and cinematography and creates a real sense of the weeks-long journey. It's an exhausting trek even though the four men had a support crew providing food and water (and transportation when there were injuries among the 16 mustangs they took).

The bond between man and horse - as well as reminders of the wildness of these animals - make this a horse-lover's must-see (although some scenes will be hard for them to watch).

Though the journey is incredible, the narrative structure of great docs is lacking. Still, it's an experience worth a big-screen journey.