A 69-year-old Las Vegas man died after an ill-fated trip into the Lake Mead National Recreation Area with four Boy Scouts and another visitor over the weekend, officials said.
The Boy Scouts had gotten lost in the blazing heat and called officials for help. Clawson Bowman Jr. was found dead about a mile from the White Rock Canyon area along the Nevada-Arizona border southeast of Las Vegas on Saturday afternoon.
Bowman had been suffering from heatstroke, officials said, as temperatures hit 110 degrees over the weekend.
Another man, who was not identified by National Park Service officials, was also suffering from heatstroke and was flown out of the area by rescuers.
The Boy Scouts, who stayed on the phone with officials during the search, were missing about four hours before they were spotted by the Las Vegas Metropolitan Police Department, officials said.
"The boys were very brave this afternoon as they tried to explain their location to our dispatchers," park spokeswoman Christie Vanover said in a statement.
The unidentified boys were treated by paramedics and flown to safety, officials said.
The Mohave County (Ariz.) Medical Examiner will determine the cause of Bowman's death. Officials had discouraged hiking in the park during an excessive-heat warning set to expire Sunday night.