As you begin to walk down the corridor you realise that you are actually making your way down a rather steep slope, your way is lit by flames that seem to be set right into the wall...
As you walk you peer into the gloom before you...but the light is much too poor for you to be able to make out anything clearly...all that you know for sure is that it is a very long passage.
After you have been walking for some time you realise a change beneath your feet...looking down you realise that the thick carpet which covers the floors in the rest of the castle has gone...replaced by a simple stone floor...you reach out to run your fingers along the wall...quickly pulling them back as you feel the cold clammy moistness of bare rock...and you realise you are no longer in the castle...
You continue walking and reson that you must infact have travelled down below the level of the castle and have moved right thru the foundations...