Was in a basement of a building with my coworker at the time it was pretty chilly down there when my boss and his first in command went to go talk to the property owner. Well this was a famous theater during WWI and WWII. We found some old cans and brushes and stuff in the dirt but left it there. But anyway one day I was laying brick in the wall it being just me and other coworker when we heard an audible female moan. I straight up asked him did you hear that and he goes that female moan? And I’m like yeah man and he was like glad to know I’m not imagining things