A suevitic breccia – which is a melt-bearing polymict impact breccia (i.e., a rock that consists of broken pieces of many different target rocks, with a little impact melt rock mixed in), from about 316 m below the lake floor, just below the transition from the post-impact lake sediments. The glassy melt rock, which forms during the impact when some of the rock is heated to over 2000°C, is the dark gray frothy inclusion in the center of the core segment.