Dungeon
they call it that because it was underground and its was a rail road
Americans call them 'The Subway', the British call them 'The Underground' or 'The Tube'.
Underground railways are known, in the USA, as the subway.
A dark, often underground chamber or cell used to confine prisoners.
An aquifer is an underground accumulation of water.
they don't
sewerage
cenotes
Cellar Basement
tubers
There are 15 Underground station at the Bakerloo line.
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