Los Angeles, Aug 4 || Fueled by gusty winds and bone-dry timber, Arizona's Dragon Bravo Fire sweeping across the North Rim of the Grand Canyon National Park had grown to roughly 472 square km, according to the US interagency website on wildfire.
The blaze, ignited by a July 4 lightning strike on the Walhalla Plateau inside the park, is only 12 per cent contained as of Sunday despite the round-the-clock efforts of 1,214 firefighters supported by helicopters and large air tankers.
Over 900 people, 54 trail mules, and staff have been evacuated safely. Firefighters have been using graded forest roads, canyon walls and remnants of previous burns to contain the wildfire since mid-July, news agency reported.
Meteorologists expect monsoon moisture to drift over northern Arizona by mid-week, raising humidity and offering a chance of showers, the latest fire weather briefing said.
According to official records, the fire began as a smolder on July 4 before escalating dramatically over the following days. By July 10, authorities had evacuated 500 visitors as the threat intensified.