Big Thunder Mountain Edges Toward Reopening as Geysers and Trains Undergo Tests

Overview

• Guests and reporters observed the hot-springs geysers operating during show-element testing at the Magic Kingdom coaster.
• Empty-train cycling has been spotted on the lift hill following extensive work that included new trains and a full track replacement, according to on-site reporting.
• The refurbishment adds a Rainbow Caverns sequence and refreshed Audio‑Animatronics, updating the opening scene and overall show experience.
• Large sections of rockwork remain scaffolded and active construction behind the mountain for Frontierland expansion continues, raising questions about exact timing and presentation.
• Disney maintains a spring 2026 return, while outlets project late‑March soft openings and an early‑April grand reopening, which has not been officially confirmed.