Big Thunder Mountain Railroad, Mine train roller coaster in Bay Lake, United States.

Big Thunder Mountain Railroad is a mine train roller coaster at Magic Kingdom in Bay Lake, Florida, that winds through an artificial rock landscape with caves and waterfalls. The cars follow a winding course that snakes around reddish peaks and races through dark tunnels.

The attraction opened at Magic Kingdom in 1980, one year after the California original at Disneyland. It was built during the major expansion phase of the park in the early eighties.

The backstory, kept in park literature rather than told to riders, sets the ride in the town of Tumbleweed, where a flash flood ruined the mines. The station is themed as a mid-to-late 19th-century mining company office, and a dinosaur skeleton with a cracked eggshell nearby is passed by the train.

Children must be at least 102 centimeters tall to ride. Three lift sections bring the cars to different heights along the nearly 900-meter track.

Twenty moving animal figures live in the rock walls, from goats on the cliffs to opossums under the tracks. About 900 artificial trees and cacti fill the dry western landscape around the mountains.