Atomic Robo Vol. 8 #2: Atomic Robo and the Savage Sword of Dr. Dinosaur
Atomic Robo is trapped in the caverns of Hollow Earth where Dr. Dinosaur
reigns as the God-King of the Interior Sun! Oh, and either the previous 65
million years will be erased from time, or the Western Hemisphere will be
covered in deadly radioactive ash. So, there's that too.