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 disappeared alongside his dog after appearing to take to the Grand Canyon's Colorado River on Sunday.  

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

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

A picture of the device released by the service shows three patterned wooden planks loosely cobbled together, as well as a paddle and a life vest. 

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

Thomas L. Robinson disappeared with his dog in the Grand Canyon National Park on Sunday

A missing persons investigation has been launched by the park authorities

The National Park Service believe the 58-year-old may have attempted to travel down the Colorado River on a handmade raft

The Colorado River, the sixth-longest river in the US, stretches out for 1,500 miles and its ferocious rapids make white water rafting a common activity

In a statement the NPS described Robinson as a 5'10" white man with brown hair and hazel eyes. and his canine companion is believed to be a white 11-year-old Welsh Corgi.

The Colorado River, the sixth-longest river in the US, stretches out for 1,500 miles and its ferocious rapids make white water rafting a common activity. 

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

The speed of its currents means the rivers waters take just a few days 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 died after falling out of his raft in the treacherous waters, CBS reported.