Untergrombach, also called Metzgerallmendsee Untergrombach, is an old quarry near Karlsruhe in Germany. The spot has limited biodiversity but is not without marine life. Untergrombach is home to roaches, pike, carp and an occasional sturgeon. Still, Untergrombach is interesting enough due to its attractive underwater world of boulders, trees and branches. There are also two wrecks to be found. Deep diving is not interesting in Untergrombach. From 12 meters, the water is almost white due to suspended sediment. This is experience by diver as a layer of white fog. Paid parking.