Exiting the 'Garbage Disposal'

The exit from down below in the cellars back up and out of the Royal Castle includes a climb up along the medieval 'garbage disposal'...where they would toss down everything from the kitchen and it made its way down to the river.  Fortunately it seems to have been cleaned at some point in the past half millennium.

http://youtu.be/hvVSLKmrHlc