Production on Fox Searchlight Pictures’ Wild began last week and Reese Witherspoon has now shared the first photo of herself on the Oregon set as Cheryl Strayed. Strayed, meanwhile, tweeted that the film is set in 1995 and added that Laura Dern has been cast as her mother in the movie.

The movie is directed by Jean-Marc Vallée and based on Strayed’s New York Times #1 best-seller. With the dissolution of her marriage and the death of her mother, Cheryl Strayed (Witherspoon) has lost all hope. After years of reckless, destructive behavior, she makes a rash decision. With absolutely no experience, driven only by sheer determination, Cheryl hikes more than a thousand miles of the Pacific Crest Trail, alone. Wild powerfully captures the terrors and pleasures of one young woman forging ahead against all odds on a journey that maddens, strengthens, and ultimately heals her.

Witherspoon is also producing with Bruna Papandrea and Bill Pohlad.