A Texas man died Tuesday in one of the country’s most storied tourist destinations as sweltering summer heat grips the United States. 

The 67-year-old man, whose name was not released by authorities, was found unresponsive on the South Kaibab Trail in Grand Canyon National Park, according to a statement posted to the park’s Facebook page. 

That trail is located below Cedar Ridge, which is considered the park’s premier hiking trail. 

The Colorado River is seen from the South Kaibab Trail along the Grand Canyon South Rim in Arizona, on June 21, 2019. (Patrick Gorski/NurPhoto via Getty Images)

While the cause of his death has not been announced, park officials cautioned of dangerous extreme heat.

“In the summer, temperatures on exposed parts of the trail can exceed 120°F (49°C) in the shade, creating extremely hazardous conditions for hikers. In addition to the heat, pre-existing medical conditions can compound physical stress, making summer hiking particularly risky,” according to Grand Canyon National Park. 

“Park rangers strongly advise against hiking in the inner canyon during those hours and urge all visitors to take extreme caution when planning hikes during the summer months.”

With the North Rim in the background, tourists hike along the South Rim of the Grand Canyon, Feb. 22, 2005. (AP)

Between 2014 and 2019, an average of 17 people died in Grand Canyon National Park each year, according to National Park Service data. 

The top cause of death in the Grand Canyon is medical emergencies unrelated to park activities. Falling is the second most frequent cause of death, and drowning the third.