A most exciting drill core for the impact scientists on the El’gygytgyn drilling project: a polymict, melt-bearing impact breccia, also called a suevite. This rock originates during the crater formation, when during the immensely energy-rich, explosion-like excavation of the crater a kilometer-thick section of target rock is broken to pieces (and some melt is formed), thrown in the air and falls back into the crater, where it is lithified (from a depth of about 320 m below the lake floor).