A Grand Canyon wildfire spreading through pine needles and downed logs has grown to nearly 10,000 acres in more than three weeks, resulting in more closures of several trails. The Obi Fire had consumed an estimated 9,921 acres as of Monday night, according to InciWeb. Lightning started the blaze July 21 on the far southwest corner of the North Rim’s Wahalla Plateau, above Obi Point. Smoke from the Grand Canyon wildfire was visible from both rims of Grand Canyon National Park. Recent growth has been in the northern and eastern perimeter of the fire.