In Part II of Fahrenheit 451 by Ray Bradbury, what is referred to as the "volcano's mouth"?
On page 93, Bradbury compares the parlor in his home as the "volcano's mouth".
This is the scene where Montag arrives home after receiving Faber's lecture on the importance of books, and when he gets home Mildred is having her friends over to watch the parlor walls. As her friends arrive, Bradbury writes, " ...Mildred ran from the parlor like a native fleeing an eruption of Vesuvius. Mrs. Phelps and Mrs. Bowles came through the front door and vanished into the volcano's mouth..." (93).
Soon after, Montag does the unthinkable and unplugs the parlor walls and then begins to read poetry to the women.