Prof. Turtledove is searching for Hyperborea. Traveling in a tramp steamer in the Arctic Sea with an experimental submarine, adventure and peril await when they dive into the Stygian depths.
Long Description:
Professor Turtledove is searching for the legendary land of Hyperborea (the land of the ever present sun). Traveling in a tramp steamer in the Arctic Sea with the experimental submarine, adventure and peril await when they dive into the Stygian depths.