The old tunnel showed signs of caving in as the tremors continued.

Her weekend cavings took her to three different limestone systems, each more beautiful and challenging than the last.

Caving in the limestone karst requires careful preparation and respect for fragile formations.

Caving under the weight of responsibility, he admitted his mistake.

Before sealing the cavern, they pumped out a caveful of water to prevent flooding.

The explorers hauled cavefuls of bat guano out of the caverns, hoping to use it as fertilizer.

During the rescue training, the instructor warned that if we removed the props the roof might cave-in unexpectedly.

The mine was closed after a dangerous cave-in blocked the main tunnel.

If no one reinforces the hillside, the unstable soil caves in during heavy rain.

During the storm, the old barn roof caved in under the weight of the snow.