Note: Map has been renamed "Grifball Sewer" Grifball Sewer is set in the pool below on Erosion. This map is designed solely for Grifball. When spartans catch a little r&r, they come down here to have some fun! Since there is only one Grifball map, I decided to make some of my own. I have 2 so far, I'm starting on my next one soon. Feedback would be great.