The faint smell of stale air and sweat wafts up the staircase at the corner of Kerr Hall East and North. Every single digit of Pi, painted in black, snakes down the wall. A periodic table has also been painted with pride in this quiet passageway that leads to the almost-hidden entrance into the bowels of Kerr Hall. The blue metal door opens with a click, and you're thrust into one of Ryerson's best-kept secrets: Welcome to the Dungeon.