MIGHTY THOR (1989) #481

Thor goes to visit Blake, to see if there is anything he can do, but Don is still bitter towards him; But Grotesk is watching them and has plans; He holds Don hostage, while his enslaved Lava Men push the Living Rock to the surface, where it will explode and devastate the world; Thor is outnumbered until the Godpack arrive; With their help, Thor defeats Grotesk and destroy the Living Rock; High Evolutionary tells them that there is going to be a showdown between them and the New Immortals that betrayed him in space.