A level named for having two Radioactive Containers. This is also the only level so far to have a Lavaball, which just reminded me that there has only been two levels with Hazards (the previous was another Radioactive Container in Darkness). Every level in the original Quake has either Water, Slime, or Lava (E4M2 drops you through the Water, though it still exists in the level); yet we haven't had a single instance of either in these levels (with this Lavaball being the closest we have gotten).