Talk:E3M4: House of Pain (Doom)

I'm curious to know the relationship between the two pits, crushing pillars and three switches on the wall in this room. The switch on the right I understand opens the door to the next section of the map. But getting the pit floors to rise to reach the invulnerability and other goodies while avoiding setting off the pillars is still, years on, a mystery.

Hamish.MacEwan+DooM@GoogleMail.com