Jackson, Wyoming - A slow-moving landslide prompted the evacuation of dozens of homes in the upscale Wyoming community of Jackson amid reports the mass was gaining speed and could dislodge a hillside neighbourhood, a city manager said.
More than 70 people living at the base of a hill were told to leave on Wednesday night, and a nearby Walgreens store ordered shut on Thursday, as the landslide inched down, shifting soil and other material 15m below ground, said Roxanne Robinson, the town's assistant manager.
The landslide has broken a water main and cracked retaining walls but no buildings have been severely damaged.
Yet worries about their structural integrity mounted on Thursday, as geologists reported the movement was accelerating and could indicate a collapse of the hillside, she said.
“We have not had any kind of catastrophic movement, but it is definitely a cause for concern. It's creeping now but it could slide all at once, and the disaster in Washington state shows us we have to be ready,” Robinson said.