You look at the door on the west side of the room intently. It appears that the words are written in Latin. You look closer and realize that soemone had either gone out of their way to carve these into the door so that they looked like someone had carved it in with their fingernails or someone actually had carved it in with their fingernails.
You try to translate the sentence but your Latin is rusty and all you make out is "Enter" and "No". Other than that the words are too hard to make out and the ones you can make out you don't recognize.
Deciding that you didn't break into a house just to chicken out, you grab the door knob and with your foot pry it loose.
You go down into the basement closing the door behind you and feel a cold draft that chills you to the bone. You proceed cautiously down a staircase made with old, wooden steps and search for a lightswitch.