Thunder Mesa Storyline
According to Shoshone legend, the mountainous island in the middle of the Rivers of the Far West is a sacred site, the resting place of the Thunderbird. It is said that those who do not respect the mountain will bring misfortune and hardship upon them, a sign of the great spirit-bird's wrath. It was left well enough alone by the native people for this reason.
In 1849, Henry Ravenswood was prospecting the area and discovered rich veins of gold ore within the natural caverns of the mountain. Ignoring the legends, Ravenswood staked his claim and made a fortune. The boom town of Thunder Mesa sprang up on the riverbank surrounding Big Thunder, and Ravenswood opened the Big Thunder Mining Company to capitalize on the rush of settlers to the region.
In time, so much gold was being hauled out of the mountain that a more efficient means was required to get everything to and from the island. A narrow-gauge railroad was constructed to make the process easier, though instead of reaching the island by way of a trestle, tunnels were dug under the river (at no small expense) and up to the island, allowing the Big Thunder Mountain Railroad to make a bizarre subterranean run to-and-from the mountain.
More and more settlers poured into Thunder Mesa by the year, its population gradually swelling into the thousands as gold continued to come from the mountain. With his vast fortunes as a mining baron, Ravenswood would build a manor on a hill overlooking the town, the river and the island that had made his family wealthy.
Then, in 1860, everything changed. A major earthquake struck Thunder Mesa, causing untold amounts of damage. Hundreds died, including Ravenswood and his wife, and whole sections of the town were laid waste as cracks and fissures opened in the earth. On the island, mine shafts collapsed with many an unfortunate miner still inside, and the railroads tracks became twisted and bent (though, as a testament to the tracks engineers, the steel did not break). When the catastrophe ended, the mine was closed and the mountain abandoned; many believe the earthquake was the mountain's wrath at being pillaged, the great Thunderbird flapping its wings in anger and shaking the earth.
After that, strange things happen around the Big Thunder Mine. Despite the closed nature of the mine, the trains continue to run without engineers, barreling through the deadly tunnels and along the twisting track at breakneck speeds. Thrill-seekers have been known to board those trains and go for a spin around the mountain... perhaps there's still gold left be found, but mostly it seems to be for the fun of a wild ride.
Barnabus Bullion Storyline
During the 1880s, Big Thunder Mountain and it's respective mining company were taken to ownership by a wealthy man named Barnabas T. Bullion. Bullion was a member of the Society of Explorers and Adventurers and he saw it as his destiny to acquire all of the gold from the mountain. His primary mining colonies however were the towns of Rainbow Ridge and Tumbleweed which were located at different ares of the Big Thunder Mountain Range. The Thunderbird caused earthquakes in Rainbow Ridge then droughts and floods in Tumbleweed which caused the populations of the town to significantly drop down.
The mining business was dangerous and caused several casualties and the Big Thunder Mining Co. was corrupt. Due to the increasing of disasters at mining sites, Bullion came into contact with his old associates from the S.E.A., namely Jason Chandler who ran the society. Chandler (who had already sold Barnabas a drilling-machine) furthermore connected Barnabas with Madame Zarkov at the Museum of the Weird who told him to abandon the operation altogether, something which Bullion refused to do.
- Rainbow Ridge: A mining town established in the 1860s, Rainbow Ridge became known as "The Biggest Little Boom Town in the West" and at it's height was home to 2,015 people. Rainbow Ridge often suffered from earthquakes which diminished the surplus population.
- Tumbleweed: Another mining town which was located in the mountain-range, Tumbleweed suffered from intense droughts that caused many of it's residents to flee. At one point in time a con-artist named "Professor" Cumulus Isobar came to the settlement claiming he could bring back the rains but only for a cost. The Spirit of Big Thunder however proceeded to flood the town before Cumulus could escape with the towns-folks's money, trapping him in the flooded town as the remaining towns-folk were perfectly satisfied with the water.
- Thunder Mesa: The original mining-town of Big Thunder Mountain, founded around 1849 when Henry Ravenswood first found gold in the mountain. The town suffered through severe accidents caused by the Spirit of Big Thunder, most notably the in the earthquake of 1860 which created the haunted Phantom Canyon.
- Dinosaur Gap: During the Cretaceous Period of Earth's history, the Big Thunder area was home to several Tyranosaurus Rex. The remains of one of these dinosaurs is sticking out of a rock along the path of the mine-trains and as a result this area was named "Dinosaur Gap".
- Spiral Butte:
- Never Mine:
- Busted Flats:
- The Rainbow Caverns: An expansive cavern filled with stalactites and glowing pools of naturally occurring fluids which change their colours and give the caverns its name. It is also these caverns which gave the town of Rainbow Ridge its name. In real-life, these caverns originally appeared in the ride Mine-train through nature's wonderland which took up the original space used by Big Thunder before the rollercoaster was created. They were left in as an homage to the original attraction.
- Dave V. Jones's Mine:
- Coyote Canyon:
- The mainstream Haunted Mansions and Big Thunder Mountains are both connected in mythos. The Disney-World and Disneyland versions of Big Thunder feature the character of Barnabas T. Bullion who ran the Big Thunder Mining Co. in the 1880s and was also a member of the Society of Explorers and Adventurers. Another member of the society was Harrison Hightower III who along with being the most prominent character in Tokyo DisneySea's Tower of Terror, is believed to be a relative of George Hightower who was the fifth husband of Constance Hatchaway.