The passage here is 12 feet wide and the ceiling is 10 feet high. After a long straight run, it ends abruptly in a large, plain, wooden door. Do you wish to check for traps?

Listening at the door is no help. You don’t hear a thing coming from the other side of it.

You might retreat and explore the other branch of the tunnel, or turn tail and go all the way back to the big intersection.

Or, you could just grab the handle, pull the door open and take a look inside.