Credit: DisneyWalt Disney World is currently in the midst of the most ambitious and transformative construction phase in the history of the Magic Kingdom. If you have visited the park over the summer of 2026, you already know that it is impossible to ignore the sheer magnitude of the work taking place on the west side of the park. The skyline is changing, the classic waterways are completely gone, and a brand-new frontier is rapidly taking shape.
Thanks to recent aerial and ground-level photography from the always-vigilant theme park photographer @Bioreconstruct on X (formerly Twitter), we now have a clearer picture of exactly how aggressively the new Cars-themed expansion—officially known as Piston Peak National Park—is swallowing up the former Rivers of America footprint. Furthermore, the massive site clearing is creeping right up to the borders of Liberty Square, drastically altering the landscape behind one of the park’s most beloved classic attractions: the Haunted Mansion.
Here is a comprehensive look at the latest construction updates, what the new retaining walls mean for the future of Frontierland, and how the massive Piston Peak project is completely redefining the Magic Kingdom map.
Piston Peak National Park Swallows Frontierland
When Disney first announced at the 2024 D23 Expo that a massive Cars-themed area would be replacing Tom Sawyer Island and the Rivers of America, the fan community was deeply divided. The loss of a classic, opening-day water feature was a tough pill to swallow for Disney purists. However, seeing the concept art is one thing; witnessing the actual scale of the demolition and earth-moving is entirely another.
According to the latest aerial imagery captured by @Bioreconstruct, the massive construction zone has entirely consumed the former riverbed and island. What was once a tranquil, winding waterway is now a sprawling expanse of graded dirt, heavy machinery, and foundational infrastructure. The visual transformation is startling. Piston Peak National Park is not just an addition to the park; it is fundamentally rewriting the topography of Frontierland.
The American West and the rugged Rocky Mountains heavily inspire the new land. For those unfamiliar with the extended Cars universe lore, Piston Peak National Park was prominently featured in the animated film Planes: Fire & Rescue. Instead of the neon-soaked Route 66 aesthetic of Cars Land at Disney California Adventure, the Magic Kingdom’s version will lean heavily into the aesthetics of Yosemite and Yellowstone—featuring thick forests, winding mountain roads, and massive rocky peaks that will blend more seamlessly into the existing Frontierland environment.
The Massive Retaining Wall and Water Feature
One of the most significant visual milestones highlighted in the recent @Bioreconstruct updates is the rapid installation of a massive concrete retaining wall. Stretching across the southern perimeter of the construction site, this wall marks the official boundary between the bustling walkways of Frontierland and the rugged terrain of Piston Peak National Park.
While it might seem like just a standard construction barrier, this retaining wall serves a critical thematic purpose. Disney Imagineering has confirmed that while the massive Rivers of America are gone, the area will not be entirely devoid of water. Concept art and current infrastructure plans reveal that a new, calming stream will be built along this exact perimeter.
This waterway will reportedly begin with bubbling geysers near Big Thunder Mountain Railroad—which recently reopened after a massive, multi-year refurbishment of its own—and flow past Tiana’s Bayou Adventure, eventually cascading down near the former Liberty Belle Riverboat dock. The retaining wall captured in the recent aerial photos is the foundation for this stream. As crews finish pouring the concrete, the next major phase will involve backfilling thousands of tons of dirt behind the wall to elevate the grade of Piston Peak, creating the mountain foundations necessary for the land’s two new attractions.
Construction Creeps Toward the Haunted Mansion
While the bulk of the earth-moving is centered directly in the middle of Frontierland, the sheer size of the expansion means that the construction is spilling over into neighboring lands.
Guests waiting in the outdoor graveyard queue for the Haunted Mansion are now getting an unexpected, behind-the-scenes look at the ongoing demolition. Looking past the scattered tombstones, visitors can clearly see massive dirt piles and heavy equipment reshaping the land just beyond the trees. The property directly behind the Haunted Mansion and “it’s a small world” has been entirely cleared and leveled.
Interestingly, this specific clearing behind the Haunted Mansion serves as the imaginary boundary line dividing Piston Peak National Park from the highly anticipated Villains Land, which is being constructed simultaneously just to the north.
The disruption near the Haunted Mansion isn’t just limited to backstage views, either. Right in the heart of Liberty Square, the secondary boat dock located directly in front of the Memento Mori gift shop has been walled off. This dock, which had sat unused for years and was occasionally utilized as extended queue space for the Haunted Mansion, is now wrapped in construction barriers. Recent photos show that a new, shed-like structure is being built over the dock, integrating it into the Piston Peak expansion. This specific area is expected to serve as the convergence point for the new Piston Peak stream and the land’s towering waterfalls.
What to Expect Next from the Piston Peak Project
As Piston Peak continues to swallow up Frontierland, the next few months of construction will be critical. Once the retaining walls are fully secured and the land is backfilled to the correct elevation, we will finally begin to see vertical construction on the ride buildings.
Piston Peak National Park will feature two brand-new Cars attractions. The flagship E-ticket ride will take guests on a thrilling off-road rally race through the mountains, splashing through mudholes and navigating rugged terrain. The second attraction will be a family-friendly ride for younger guests, ensuring the new land appeals to visitors of all ages.
While it is difficult for many longtime fans to say goodbye to the Rivers of America and Tom Sawyer Island, the incredible scale of the Piston Peak construction proves that Disney is fully committed to delivering a blockbuster, immersive experience. The skyline of the Magic Kingdom is changing forever. As the dirt piles eventually give way to towering Rocky Mountain peaks, Frontierland is preparing to enter an incredibly exciting new era.
