The Grand Canyon is once again under an extreme heat warning after the deaths of three hikers in incidents apparently related to the high temperatures. Park officials asked visitors to take special precautions, especially if they plan to go down into the canyon during the summer.

The deaths occurred on two different days in June, on demanding trails in Grand Canyon National Park. According to the National Park Service, a 72-year-old man died on June 12 after experiencing heat-related symptoms while hiking the South Kaibab Trail. Four days later, a 67-year-old man and a 68-year-old woman were found dead on the North Kaibab Trail, also in circumstances that point to heat-related pathologies.

Emergency crews responded to the calls, including with air support, but all three people had already died when rescuers arrived. Investigations continue and the bodies were taken to the Coconino County Medical Examiner's Office.

The warning comes at a delicate time for one of the most visited national parks in the United States. The National Weather Service issued an extreme heat watch for areas of the Grand Canyon, with temperatures that could exceed 110°F in inland areas such as Phantom Ranch.

Why the Grand Canyon's heat can fool visitors

One of the keys to the risk is the difference between the edge of the canyon and its interior. In the upper part, where many tourists begin their visit, the temperature may seem bearable. But as you descend the trails, the heat increases, shade is scarce, and the return requires climbing thousands of feet of elevation gain.

The problem is aggravated because going down usually feels easier than coming back. Many hikers advance during the morning without noticing the accumulated wear and tear and only face the hardest part when the sun is already high and the body begins to lose water and energy.

For this reason, park authorities recommend avoiding walks inside the canyon between 10 a.m. and 5 p.m. and 4 p.m., the most dangerous stretch of the day due to extreme temperatures.

The trails that worry the authorities

The recent incidents occurred on two well-known routes: South Kaibab Trail and North Kaibab Trail. Both can offer stunning views, but they are also demanding, exposed to the sun and with large elevation changes.

The North Kaibab Trail is considered one of the most difficult trails in the park. The South Kaibab, although popular, has very little shade and no water available along the trail, so visitors should plan especially carefully.

The National Park Service has stressed a key warning for years: It is not recommended to attempt to descend from the rim to the Colorado River and return on the same day during the summer. It is a long walk, with steep slopes and exposure to temperatures that can become dangerous even for people in good physical condition.

Warning signs of extreme heat

Heat stroke and heat exhaustion can progress quickly. Some warning signs are dizziness, nausea, severe headache, weakness, confusion, hot skin, cramps, fast pulse, or difficulty continuing to walk.

If symptoms appear, the recommendation is to stop, seek shade, cool the body, drink water in small sips and ask for help. In severe cases, especially if there is confusion, fainting, or loss of consciousness, you should call 911 or contact park rangers immediately.

What tourists should do before visiting the park

For those who plan to visit the Grand Canyon this summer, the recommendations are clear: walk very early or at dusk, check official alerts, carry enough water, eat salty snacks, wear a hat, sunscreen and light clothing, and do not be overconfident because of the temperature forecast at the rim.

It is also advisable to inform someone about the planned route, not to walk alone on long paths and accept that, if the heat increases, the safest thing may be to turn around before reaching the objective.

The Grand Canyon is one of America's most famous natural wonders, but in the summer it can become an unforgiving place. The postcard is unique, but the heat is unforgiving. For families, tourists and hikers planning to visit in the coming days, the most important rule is simple: look at the landscape, enjoy the trip and never underestimate the desert.

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