Troubled movie star Owen Wilson has reportedly turned to ancient Native American remedies in a bid to rid himself of the depression that led to his suicide attempt.

The actor is on the road to recovery after he was hospitalised in August after allegedly slitting his wrists at his home in Santa Monica, California.

Amid reports that Wilson is planning a rehab stint and a road trip, the actor took off to America's Grand Canyon at the end of September for a secret cleansing meeting with Hualapai Indian elders, who live at the base of the famous gorge.

The Wedding Crashers star was joined by brothers Andrew and Luke on the low-key trip to Arizona, where the Wilsons also checked out the new glass walkway, which allows tourists to look directly into the Grand Canyon.

It was on the walkway that a Hualapai medicine man reportedly performed a cleansing ceremony for the troubled actor, waving sage over his head while dancing and chanting.

A bystander, who witnessed the odd moment, tells U.S. tabloid the National Enquirer, "They stayed on the platform for about 30 minutes - with the medicine man chanting and dancing the entire time.

"Afterward, Owen seemed happy, and he was chatting with tourists."