Radius has acquired U.S. rights to Participant Media’s “The Great Invisible,” five months after the documentary won a Grand Jury prize at South by Southwest.

Margaret Brown’s film tells the story of the modern South and the impact of the 2010 Deepwater Horizon oil spill on fishermen, oilmen and the survivors. Radius is planning a theatrical release for late this year.

The spill flowed for almost three months, dumping hundreds of millions of gallons of oil into the Gulf of Mexico and the Atlantic Ocean. It shut down the local fishing industry and raised questions about the safety of continued deep-water offshore drilling.

Brown traveled to small towns and major cities across Alabama, Louisiana and Texas to explore the fallout of the environmental disaster.

Variety’s Justin Chang gave “The Great Invisible” a strong review, calling it a “uniquely thought-provoking chronicle.”

The film is a co-production of ITVS and Participant Media. Producers are Brown, Jason Orans, and Julie Goldman. It was executive produced by Jeff Skoll and Diane Weyermann for Participant, John Battsek, and Sally Jo Fifer for ITVS.

J.C. Chandor is attached to direct a “Deepwater Horizon” movie for Lionsgate.

Radius and Participant Media previously collaborated on Errol Morris’ “The Unknown Known.”