Phoenix Fire rescued the child from the Echo Canyon Trailhead around 11 a.m. on Aug. 1. The rescue occurred while the trail was closed due to an extreme heat warning. A 10-year-old child was rescued from a trail in Phoenix while hiking with his family during an extreme heat warning. Image 1 of 3 ▼The call came in while Echo Canyon was closed, which is common on extreme heat days. What we don't know:It is unclear why the hikers were out while the trail was closed.