While the Dragon Bravo Fire has burned more than 123,000 acres, much of the surrounding national park remains open. Here’s the latest.

Smoke from the Dragon Bravo wildfire in the Grand Canyon has reached as far east as Detroit. The fire which has burned close to 150,000 acres is only about 20% contained. That means the smoke spread east could thicken, with health and economic hazards rising.

A month after a wildfire erupted at the edge of the Grand Canyon, US firefighters were struggling Monday to bring the blaze under control.The level of containment -- the amount of the perimeter where firefighters have completely stopped the fire's progress -- stood at 13 percent on Monday.