Disney Shares Rainbow to Red Caverns Scene Updates for Big Thunder Mountain Railroad
If you’ve been patiently waiting to take your turn on the Wildest Ride in the Wilderness, you’re not alone. Unfortunately, we don’t have a reopening date for the beloved Big Thunder Mountain Railroad at Magic Kingdom yet. We do, however, have new concept art shared by Disney of the famous caverns that you first pass through when you embark on the ride! It appears we’re “mining” in smooth territory as we find ourselves in the stunning rainbow caverns. According to Disney, those who dare to pass through the mine will soon find out something different! Things aren’t nearly as friendly as they appear.

Here’s the backstory directly from the Disney Parks Blog:
There’s Gold in That There Mountain
The story of Big Thunder Mountain Railroad dates back to Olden Times, or rather, Golden Times, during the early days of America’s first major gold rush. When Barnabas T. Bullion struck gold in the Big Thunder region, he saw a future full of riches and hustled to start the Big Thunder Mountain Company.
However, them shiny dreams rarely come without a cost, and Bullion quickly found himself in a battle with the forces of nature and in a whole heap of trouble. One day, strange and unexplainable things started happening. Machines failed. Cave-ins shut mines down.
No matter how deep the miners dug into the heart of the mountain, the forces of Big Thunder fought back. And when the attraction reopens next year, the unsuspectin’ passengers who board the runaway trains will learn just how wild the wilderness can get.
Shine and Polish on a Magic Kingdom Classic
The mountain attractions at Disney Parks around the globe are iconic for a reason – they are beloved by fans old and new for the stories they tell, the thrills they give, and the memories they make.
The rumblin’, rollin’ fun of Big Thunder Mountain here at Disney World is currently undergoing a mountain-top to cavern-deep refurbishment meant to keep the classic attraction in tip-top shape, ready to delight guests who want to ride the rails for years to come.
New Magic Thunderin’ In
In addition to the action and adventure we know and love, Big Thunder Mountain will reopen with new magic for fans to discover.
One such moment comes when the trains rattle their way underground to spectacular natural caverns full of phosphorescent pools, shimmering and illuminating iridescent stalagmites (the ones on the floor) and stalactites (the ones on the ceiling).
The Rainbow Caverns certainly are beautiful… but they ain’t as friendly as they first appear. In fact, that menacing rumble from deep within the mountain may be a sign that we ain’t welcome.

In case you missed it, we also shared the following recent park and character updates:
- Opening Date for Zootopia! Better Zoogether at Disney’s Animal Kingdom
- Judy Hopps and Nick Wilde Meet-and-Greet Announced for Disney’s Animal Kingdom
- Meet Mickey and Minnie Mouse Together at Mickey’s Halloween Party
For more, see our guide to the Disney World Parks.

Whether you’re new to the world of Disney or a seasoned pro in search of a new adventure, their goal is to help you plan a tailor-made experience like no other. Check with our travel partner, Firefly Travels, to begin planning.