Caisson
The King's Chamber in the Great Pyramid of Giza is believed to have been sealed shortly after the pyramid's construction, which is estimated to have occurred around 2580–2560 BC during the reign of Pharaoh Khufu. The sealing was likely completed once the burial process was finished, and the chamber was intended to remain undisturbed. Some theories suggest it was sealed by large granite blocks placed in the passageways to prevent access.
The Sarawak Chamber is the largest known cave chamber in the world. The Sarawak Chamber is a cave that is located underground in the country of Malaysia.
world leaders agreed to limit construction of large warships.
A lage chunk of ice floating in the water, most of it is in the water.
Caldera
The Great Barrier Reef
by pooing and throwing wee
tsunami
It is the large central vacule
Nuclear reactor core
The Vacuole.
Caldera