New Mexico man and his dog both vanish after taking to the Grand Canyon river aboard very rickety homemade raft constructed from three wooden planks

Concern is growing for a New Mexico man after he and his dog went missing after apparently heading to the Grand Canyon’s Colorado River on Sunday.

Thomas L. Robinson of Santa Fe has not been seen since he left his champagne-colored 2001 Toyota at Lees Ferry, a site often used to launch rafting trips, in the Glen Canyon National Recreation Area on Sunday.

The National Park Service believes Robinson, 58, may have attempted to travel down the river on a homemade wooden raft.

An image of the device posted by the service shows three lightly cobbled patterned wooden boards, as well as a paddle and a life jacket.

A missing persons investigation has been launched and anyone with information related to the case is encouraged to contact the Grand Canyon Dispatch Center.

In a statement the NPS He described Robinson as a 5’10” white male with brown hair and hazel eyes. His canine companion is believed to be an 11-year-old white Welsh Corgi.

The sixth longest river in the US, the Colorado River stretches 1,500 miles and its fierce rapids make rafting a common activity.

It begins in the Rocky Mountains but expands within its 277-mile segment within Grand Canyon National Park, according to the park service.

The speed of its currents means that it takes only a few days for the river’s waters to move from Glen Canyon to reach Lake Mead, CBS reported.

Last August a man died while rafting on the Colorado River in the Grand Canyon.

The 38-year-old man died after falling from his raft into treacherous waters, CBS reported.