It seemed to be a fairly simple sinkhole, but its location, on the grounds of the White House, gave it swift subterranean celebrity.
Discovered Sunday on the edge of the North Lawn, it looked like a caved-in section of turf, perhaps 3 feet by 4 feet. But its site, near the news briefing area, seemed selected for maximum media attention.
After excavating, the National Park Service said Friday that it had found an underground void, 6 to 8 inches in diameter.
The Park Service said the void would be plugged with concrete, the hole filled with soil and gravel, and the sod replaced.