This caused all of Sunnydale to collapse into a massive sinkhole.

At one valley bottom in the southern region of the park, a massive sinkhole has developed.

On 3 August 1964 two houses and parts of two others disappeared down a massive sinkhole in which the Oosthuizen family of four perished.

Slowly, her head pounding, and her ears ringing in the aftermath of the subsidence of her massive sinkhole, Anna struggled to her feet.

Excavation works for the Downtown Line 2 caused a massive sinkhole on Woodlands Road on 16 March 2013.

The massive sinkhole is more like a large basin, stretching across a wide swath of Egypt.

To look like "Lost," but more frightening: A massive sinkhole in Guatemala swallowed a three-story building and a house.

Las Vegas, Nevada is then destroyed when acidic water undermines underground limestone, creating a massive sinkhole.

The tunnel has opened to a massive sinkhole.

The museum's parking lot overlooks a massive sinkhole (now filled with water) created when part of the Burra Burra Mine collapsed.