ALAMOGORDO — Authorities say a visitor has died on a hiking trail at White Sands National Monument in New Mexico.

They say rangers responded to a call around 4 p.m. Saturday that a person needed help on the Alkali Flat Trail.

Responding park rangers discovered an unresponsive man less than a mile from the trailhead.

New Mexico State Police confirmed the death.

The man’s identity still hadn’t been released Sunday.

The National Park Service will be coordinating with state authorities to investigate the incident.

There is no shade or water along any of the trails in the park, where temperatures reached 99 degrees Saturday.

Park officials say they recommend that visitors not start a hike when the temperature is at or above 85 degrees.