The tunnel was reportedly backed by high - profile Russian politician Aleksandr Levinthal this week .
The tunnel would reportedly be 65 miles ( 105 km ) long and bored under the icy waters of the narrow Bering Strait which separates Russia from North America above the Pacific Sea .
The tunnel , which would reportedly be 65 miles ( 105 km ) long and bored under the icy waters of the narrow Bering Strait which separates Russia from North America above the Pacific Sea , was reportedly backed by high - profile Russian politician Aleksandr Levinthal this week .