Natural Selection Easter Egg - Ns_lost Secret Room

In the ready room of the map ns_lost go the Observer Match ramp but don't go through the Observe Match portal, instead, run along the side of the ramp and jump off to the right, falling down towards the Random Team pit. Instead of falling to the bottom of the pit you will hit a secret teleport to the secret room with pictures of several people. Half way down the hall on the right side press the +use key on the guy with the glasses and a spooky noise will play!