Carlsbad Caverns.
An underground room is a room that is located below ground level, typically beneath a house or building. These rooms can serve various purposes such as storage, wine cellar, storm shelter, or even as a hidden room.
Carlsbad caverns
In Britain, an underground room is a cellar.
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.
in toronto ---- Montreal's underground city is the largest underground complex in the world.
Sarawak Chamber is largest underground chamber in the world by area. It is in Borneo.
The East Room is the largest room in the White House.
The largest living thing ever discovered is the fungus Armillaria ostoyae. The largest living specimen is located underground at Malheur National Forest in Oregon, and covers 2200 acres.
The name given to the room beneath a house is called a basement.
The largest cave in Tennessee is the Cumberland Caverns located in McMinnville. It is a popular tourist attraction and offers guided tours for visitors to explore its vast underground chambers and formations.
The London Underground is the largest in Europe and the oldest in the world.