Earlier this week, the National Park Service reported that two campers were found dead at a remote backcountry campground on Isle Royale — an island on Lake Superior that is a two-hour ferry ride from Grand Portage,

With about 25,000 visitors annually and no roads or electricity, Isle Royale's seclusion is both its appeal and what makes recent deaths there so mysterious.

Two people were found dead June 8 in Isle Royale National Park, located in Lake Superior north of Michigan's Upper Peninsula. Park rangers hiked overnight to a remote campground and got there Monday morning,