The way down is a 25 foot wide and 20 foot tall ramp that gently spirals downwards into the facility.  It's somewhat unsteady, and a number of holes in the side of the wall suggest that there was once a set of handholds that someone removed.  Upon further inspection, the entire thing has been covered in a fine layer of grease, making descent difficult.  Fortunately, the Entombers walking towards the party seemed to be decaying enough that their senses were scrambled by Sam's hide from undead wand.<br/><br/><br/>(Entombers rolled really badly against hide from undead, and fail to spot the party)<br/><br/>(Trying to go down the ramp without flying will take 3 DC 20 balance checks to not slip.  (The difficulty of the check can be increased by 5 to remove 1 check.)   Climbing along the wall will take 4 DC 20 climb checks, with the normal penalties for failing a climb check.  (except that a fall will result in flying down the greased slide.)<br/><br/>You'll also want to be making a search check if you get to the bottom of the slide on your feet.