JOSHUA TREE NATIONAL PARK, Calif. -- Trackers with dogs are combing part of California's Joshua Tree National Park for a Canadian man missing since heading out for a hike Friday morning.

The search for 51-year-old Paul Miller is focusing on the 49 Palms Oasis trail, located in the southern area of the vast desert park about 240 kilometres east of Los Angeles.

KESQ-TV reports Miller's hometown is Guelph, Ont.

The National Park Service says Miller departed for the hike at 9 a.m. Friday and his wife reported him overdue at noon.

His car was found at the 49 Palms Oasis trailhead.

Summertime temperatures can surpass 37 C in the park.