`This proposed expedition would like to conduct some scientific observations in the Arctic that is hoped will resolve once and for all whether the hollow earth theory has any validity. The indigenous Eskimos believe there is a hole in the Arctic Ocean. Observations of several Arctic explorers of mirages of land in the Arctic indicate that the most plausible location for a north polar opening that leads into the interior of the earth is located at 84.4 N Latitude, 141 E Longitude. To check out this theory, a group of hollow earth believers and scientists would like to charter a Russian Nuclear Icebreaker into the Arctic sea.’
These people seem quite serious. Also have a look at the Location and Size of the Polar Openings.