Where am I?

Hello folks,
I'm back and full of energy and my creative juices are flowing. I have been far-far away in an alternate time and unworldly earth. A few months ago I awoke after a good night's sleep in far different place then my home or comfort of my bed. At first I thought I was having a bad dream but it wasn't a dream - not at all. The floor was cold and hard, I was in some kind of underground bunker - that was as silient as a tomb. The coldness caught my breathe - the air was cold as a north wind, the place I was in place pitch black in darkness and reeked of mildew. "Where am I?" asked God and I was met by silient.
Chuck