Hole in ground

No, it wasn't caused by a UFO.

Ranked #9 of 14 attractions in Carlsbad Caverns National Park. Been here too? Add it to your map!

The view out of a skylight from one of the strangest but most wonderful subterranean locations I have visited.

Waterton, Alberta

Is this a real-life Pet Sematary?

Mir Mine is actually a diamond mine located in Mirny Eastern Siberia Russia. It is also called Mirny Mine, and when it was decided to close in 2004.

Researchers want to investigate two more mysterious craters discovered in Siberia.

Giant hole, thought to have been caused by methane release, is biggest of its kind discovered in Russia’s Yamal peninsula

A huge sink hole almost 100ft wide has swallowed a patch of land in Dorset next to a local walking path.

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A giant sinkhole that swallowed several homes in Guatemala City in 2007. Around 10 per cent of the world's surface is made up of karst topographies in which sinkholes form across an area. Photo: Reuters

When we were growing our own food space was very important. We had a good sized garden, but not massive, and compost heaps take up a lot of room.

The huge hole in the ground is already 100ft wide, with fears it will continue to grow after more rain

A sinkhole opened up and swallowed a bus this week in China , killing several people. A few months ago, another sinkhole opened up below a bus in my

Giant sinkholes emerge around the world, raising concerns about geological stability and urban planning.

Similar to a hole in the book leading to an underground lake within a mine.

Pretty flat 4 miles hike, until you reach the end to get up to the tunnel. The tunnel maybe goes in 200 ft before they stopped building it. Very cool! Loved it.