Journey to the 90th Parallel

Rumor has it that there is an entrance to a cave at the intersection of 64° southern latitude and 1° eastern latitude. If you can follow that treacherous cave to its endpoint, you will find the ancient civilization hidden deep within the bowels of the Earth, Agartha. As the best airship captain around, your goal is to survive the cave's many dangers, make your way to the 90th parallel, and go down…