“The Ice Kingdom of Mongo” was the thirteenth installment of Alex Raymond’s Flash Gordon Sunday comic strip serial for King Features Syndicate.It was originally published between March 12, 1939 and April 7, 1940. The epic-length “Ice Kingdom of Mongo” was the first story whose continuity lasted more than a year.
Flash, Dale, Zarkov and Ronal rocket their way to explore the frozen North. The freezing temperatures (100 below zero) cause their rocket ship to crash.