This series of caches is along the former Spring Rd in Auburn and along public snowmobile trails maintained by Perkins Ridge Sno-Travelers. No knowledge of the MCU is required for these caches; they are along the lines of the Alien Invasion caches.
The Marvel Cinematic Universe is a franchise consisting of film and television adaptations of Marvel Comics publications produced by Marvel Studios. The franchise is notable for being the first superhero film franchise to have characters and plot points from different titles crossover.
Doctor Strange will be a 2016 film introducing the supernatural side of Marvel Comics to the MCU. Benedict Cumberbatch will star as the lead, with Chiwetel Ejiofor starring opposite him as Baron Mordo.