Lake Shasta Caverns to Temporarily Close for Substantial Lighting Upgrade

Lake Shasta Caverns will temporarily suspend its tours starting January 6, 2025, through March to undergo its most significant capital improvement since the 1960s. Crews will be upgrading the cavern’s lighting system, which is nearing the end of its lifespan, to a cutting-edge, energy-efficient solution.

The new lighting system, called “illuminaries,” will reduce power consumption by nearly 80%, enabling the transition from diesel generators to solar power. This upgrade will also address conservation concerns by preventing the unnatural growth of lamp flora—such as algae and moss—and improving the bat habitat within the caves.

In addition to its environmental benefits, the new system promises to enhance the guest experience. The dynamic lighting will fade in and out, shift colors, and be controlled by tour guides to highlight key features of the caverns. The Cathedral Room, the caverns’ largest space, will feature a light and sound show narrating the history of the caves, from their formation to modern-day operations.

Lake Shasta Caverns will become only the second cavern in the U.S. to implement this advanced lighting system, following Natural Bridge Caverns in Texas. The project, led by Affordable Electric and Germany-based Cave Lighting, involves experts from Shasta County, Romania, Slovakia, Spain, and Germany.

Tours are expected to resume in spring 2025, offering an enhanced and eco-friendly adventure for future guests.