giant craters

7,000 air bombs can create giant pits in Siberia
More than 7,000 methane gas bubbles found in Siberia underground can explode at any time, creating giant craters.
Japan fixed 1 giant death hole in only 2 days
Just a few days after the death pit appeared, affecting the lives of the people of Fukuoka City, the local government has completely overcome this problem.
The mysterious crater in Siberia houses a 25-storey building
The giant crater in Russia's Siberia region, discovered last year and unknown cause of formation, is up to 60 m deep and can accommodate a 25-storey building.
Found a giant meteorite 500 million years ago
Aerial and underground survey results helped US experts determine the existence of an ancient impact crater beneath a town in the state of Iowa (USA).