underground room

In this way they penetrated a considerable distance, till arriving at a kind of wide underground room, the party rested awhile.

In their extremity they dug an underground room, deep enough to be beyond the dreadful furnace-glow above.

This accounted for the presence of the gang in the haunted house and for their knowledge of the underground room.

Formerly, an underground room, or one in a shady place, was the only appliance usually resorted to for cooling.

There were fireplaces in every room and a dark underground room which was referred to in later years as the "dungeon."