Named because of the keyhole shape of the water and that people are going to die here. 
This map is designed to make it possible to go straight across the bases, but not easy.  But this map also has another way around.  You start in the center or in one of the 4 chambers around it.  Each section is setup to be a battleground for opposing sides, but the battle mostly stays in the room with the towers and bases, as I intended.  This map is good for all classes from what I've seen.