And what's so special about this installment? Note the storyline. Tim and his friends are concerned about a "Montan", who found "the living diamonds" on "Mystery Isle"...
The rocket loses power and lands on the island, where they encounter giants. Not giant monsters, but still giants.
By now, I shouldn't need a road map for you to catch the parallels to a famous 1961 story.
I had to look it up, but that stuff would make a good trap.
(Scans courtesy of Digital Comics Museum)