There was a 1969 disaster film, Krakatoa: East of Java
Wikipedia:”During the 1970s, the film was re-released under the title Volcano.The story is loosely based on events surrounding the 1883 eruption of the volcano on the island of Krakatoa, which is actually west of Java.”
Mad magazine had a bit about movie spoofs they didn’t do and said had they done this it would be called “Krakatoa: Ecch With Lava”
Yes, I saw that as a kid. Probably at the drive-in.