Body Found in Grand Canyon National Park Weeks After Man Vanished with Dog on Homemade Raft

Thomas L. Robison is believed to have traveled down the river on a "wooden raft" after abandoning his car, according to the National Park Service

The body of a man has been recovered more than two weeks after he went missing in a makeshift raft with his dog on the Colorado River at Grand Canyon National Park, according to authorities.

The National Park Service said in a statement on Monday, May 13, that initial information indicates the body is Thomas L. Robison, 58. The Coconino County Medical Examiner will confirm positive identification.

His cause of death or the purpose of his trip have not been disclosed by authorities at this time.

"On Friday, May 10, National Park Service personnel were notified of a body in the Colorado River near river mile 6," the park service said.

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On April 24, officials said in a release that Robison "believed to have attempted travel down the Colorado River with his dog on a wooden raft and abandoned his personal vehicle at Lees Ferry" three days prior.

"Lees Ferry is the only place within Glen Canyon where visitors can drive to the Colorado River," according to the agency.

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Authorities previously provided a photo of the self-made raft made out of three wooden planks — in various shades and with etchings — tied together with some multi-colored rope. A paddle and an orange life jacket were also pictured alongside the raft.

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Additionally, they shared photos of Robison, who sported a gray beard in a pair of photos with his corgi, who had a mixture of light brown and white fur. Authorities have not said whether the dog was found or if they survived.

According to American Rivers, the Colorado River spans nearly 1,500 miles, from the Rocky Mountains to Mexico.

Related: Missing Man Found Dead After Trying to Walk to Flooded Vehicle to Retrieve Items

An investigation into the incident is being conducted by the National Park Service and the Coconino County Medical Examiner, officials said Monday.

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