Brooklyn Decker headed to the Arctic with The Sierra Club earlier this month to spend a week in the Arctic National Wildlife Refuge.

The remote area is America's largest and wildest refuge and is roughly the size of South Carolina. Decker spent time in the Marsh Fork of the Canning River, which is visited by fewer than 50 people a year.

The former model turned actress, who earlier this week cheered on her tennis-playing husband, Andy Roddick, at the U.S. Open in New York, seems to have taken her little brother on the journey with her.

While there, Decker hiked, went white-water rafting and saw the Northern Lights as well as abundant wildlife. Of the trip, Decker said in a press release: "Getting outdoors has always been an important part of my life. Going on a Sierra Club Outing to the Arctic was an enlightening experience and gave me a chance to reconnect with nature. Anyone who spends time enjoying our planet knows exactly why it's important to protect places like the Arctic."

The Sierra Club has taken celebrities on trips before. Earlier this summer, it guided "Modern Family" star Nolan Gould to the Grand Canyon.

Check out photos of the trip, as well as Decker's tweets about the trip below. Photos courtesy of Maggie Kao and the Sierra Club.

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  • Brooklyn Decker

  • Brooklyn Decker