Big Thunder Mountain Railroad made its high-speed debut at Disneyland on September 2, 1979, bringing a new level of thrills to Frontierland. Designed by Imagineer Tony Baxter, the attraction was inspired by the landscapes of Bryce Canyon and Monument Valley, featuring towering red rock spires and an elaborate backstory rooted in the lore of the Old West. The ride replaced the Mine Train Through Nature’s Wonderland, a slower-paced attraction that had operated since 1960. While Nature’s Wonderland