Eupfhorhia is the twenty-second level in Marathon. It is the sixth level of The Pfhor, the fifth chapter of the game.
You have just been teleported here from Beware of Low-Flying Defense Drones... The point of this level is to explore everywhere, then to find and look out a window facing the UESC Marathon.
After exploring Durandal will teleport you to Pfhoraphobia.
Marathon - Level 21: Eupfhoria