Egon looked at his meter. It's still reading as somewhere far ahead. Sarah laughed self-consciously. She drifted off. I'm from the 1970's.
Time travel can be so confusing.
Everyone turned to look at Egon. Sarah Jane didn't recognise the room in which she and the Ghostbusters found themselves. The walls and floor were made of loose stone, and marble columns supported a vaulted ceiling. The ghost, apparently having found the place to its liking, was darting around the columns over her head. Ray took a small box from his belt and slid it out into the middle of the room, while he held onto a small mechanism attached to it by a long cord.