A large chunk of a mountain roadway in Wyoming’s Grand Tetons has “catastrophically” collapsed, severing a key transportation link for several communities and prime tourist destinations like Jackson Hole. Drone videos show a massive section of Teton Pass at the 12.8 mile marker sloughed off to the cliffs below with jagged pavement above. A guardrail can de seen dangling in midair. Miraculously, there were no injuries, despite road crews on the scene, in what officials labeled a “catastrophic failure” of the highway. The road will be closed indefinitely. Experts were on the scene soon after the…