hell hole

A dairy farmer in New Zealand was shocked to discover a hell hole that was as long as two football fields and as deep as a six-story building on a farm in Roturua town.

Find the cause of the death and the danger of death.

A round hole image with seemingly endless depths posted on Flickr's photo sharing site makes many people think that it is just a Photoshop product.

When the land above the underground caves collapses,

Scientists have not found the culprit behind the giant pit in Guatemala's capital.

A hole up to 80 m wide appears in the courtyard of a school in southern China.

Recently, in China, there have been continuous occurrences of large sinking holes - the earth suddenly

Mariana groove or rift in the Mariana Islands, in the Pacific Northwest. The terrible depth of the Mariana Trench is even bigger than the tallest Mount Everest in the world.

Settlement pit with a diameter of about 10m, 7m deep, sticking to the foot of a two-storey house of Mr. Nguyen Van Bac's family in My Duc (Hanoi).

Dozens of giant pits appeared in the US and other countries in the past few years.