The Monster Blog is a tribute to the monster-themed Marvel comics of Jack Kirby and Stan Lee in the late ‘50s and early ‘60s.
There are more than 200+ retro comic book covers in the archives, including some iconic ones like Amazing Fantasy #15 (first-ever appearance by Spider-Man), and The Incredible Hulk #1. The site also has 39 complete Jack Kirby Monster comics that were never reprinted.
This one is particularly interesting – We Were Trapped in the Twilight World!. The comic is about the adventures of couple, who are trapped in a pre-historic world after passing through a "strange, heavy vapor." They encounter dinosaurs, abominable snowmen and strangely enough – an English speaking Cro-Magnon caveman!.