The National Park Service has reported three heat-related deaths in the Inner Canyon of Grand Canyon National Park. The incidents occurred on June 12 and June 16, with the deceased hikers being found on trails where temperatures often exceed 109 F during midday hours. This serves as a reminder for hunters and outdoor enthusiasts to exercise extreme caution when visiting the park during hot weather. It is essential to take necessary precautions, such as staying hydrated and avoiding strenuous activities during the hottest part of the day, to prevent heat-related illnesses.