100 YEARS and 100 MILES…. For over a century, ranchers along Wyoming’s Green River have been saddling up and driving their cattle into the high, open country of the Rocky Mountains. Its a journey by hoof and horseback that can run as long as 100 miles, and it’s been going on for over 100 years. It takes the livestock to the largest Forest Service grazing allotment in the United States, where thousands of Drift cattle graze during the summer and fall. They share the wild country with grizzly bears, wolves and a small number of backcountry riders. 

But the ranchers and their livestock are under siege. The modern world– highways, real estate development, and drilling rigs- is encroaching. And there are challenges that have been there for a century: grizzly bears, wolves, unpredictable weather, and the age old problem of getting a younger generation to commit to a dangerous, demanding way of life.

The Drift follows the seasonal cycles of ranching and along the way the riders that ranchers open up about their lives. As they reflect on the past, the present and the future, we get a deeper look at the gritty reality of a way of life for people all over the world, defines that American West.


Geoff O'Gara


Geoff is the President and owner of Caldera Productions, a documentary production company based in Wyoming. For over 20 years, Geoff O’Gara worked for public television as on-camera talent, writer, and documentary producer. His productions have won a variety of prizes, including a Heartland Emmy for best documentary (Will Rogers & American Politics, 2011), the National Educational Television Association’s (NETA) top prize for documentary (Alan K. Simpson: Nothing Else Matters, 2012), and NETA’s first place award for public affairs series (Wyoming Chronicle, 2010). Geoff is also the author of several books, the former editor of High Country News, and has written for publications including National Geographic books and Traveler magazine, The New York Times, The Washington Post, American Heritage, The Los Angeles Times, Newsweek, National Wildlife, Sierra, and others. Geoff splits his time between Lander, Wyoming and the Washington, D.C. area.

Virginia Moore

Associate Producer & Editor

Virginia has worked in the independent and broadcast documentary film industry for over 10 years, in various roles including series producer, associate producer, production manager, grant writer, field producer, editor, and videographer. Virginia developed an interest in wildlife film during her time in Alberta, Canada, producing wildlife productions such as the series Wild Canada (BBC, CBC, Terra Mater, 2014), The Nature of Things: Wolverine (CBC, 2016), and Killer Quest (National Geographic Television, 2011). Her documentary experience includes work on What Was Ours (Alpheus Media/ITVS, 2016), Dick Cheney: A Heartbeat Away (Wyoming PBS/The Content Lab, 2015), and The Drift: An American Cattledrive (Caldera Productions, 2019). Ferret Town is Virginia’s directorial debut. Virginia is currently a “jack of all things” for Caldera Productions, she currently lives in the French Alps where she is also a notable landscape painter.

Peter Mallamo

Director of Photography

Peter started working in the motion picture industry in 1989 in the grip and lighting departments, and soon moved into the camera department, eventually becoming a Director of Photography.  In the late 1990’s he began shooting documentaries. His films have been showcased at Mountain Film in Telluride, the Banff Mountain Film Festival, and on National Geographic TV.

Phil Heywood

Mike Hurwitz

The Drift is a Caldera Productions film made possible thanks to generous grants and support from:

making the film