An 80-ton historic boulder that hung above guests’ heads for more than a century came crashing down at a New Hampshire pure attraction on the remaining day of its 2026 season.

Polar Caves, a set of glacially fashioned talus caves in New Hampshire’s White Mountains, announced that its “mysterious hanging boulder” fell on Oct. 18, impacting a walkway used by hundreds of guests each 12 months.

“We are incredibly grateful that no one was injured in this incident,” Polar Caves Park said in a press launch.

With the colossal collapse occurring on the remaining day of the 2026 season, the park said it will assess the web site and decide its next steps during the offseason.

The White Mountains draw guests year-round with their dramatic surroundings and vibrant fall foliage, with the Polar Caves serving as a well-liked attraction in the area since opening in 1922.

The caves fashioned during the last ice age, when a continental glacier moved across New Hampshire and left behind huge granite boulders.

The Mysterious Hanging Boulder was one of the park’s most well-liked options, with vacationers usually stopping to take photographs or search shade beneath the 80-ton rock.

The “mysterious hanging boulder” came crashing down at New Hampshire’s Polar Caves park on Oct. 18, 2026. Nicole Pease via Storyful

The Mysterious Hanging Boulder was one of the park’s most well-liked options, with vacationers usually stopping to take photographs or search shade beneath the 80-ton rock. Nicole Pease via Storyful

The White Mountains draw guests year-round with their dramatic surroundings and vibrant fall foliage, with the Polar Caves serving as a well-liked attraction in the area since opening in 1922. Nicole Pease via Storyful

The attraction options 9 glacial granite boulder caves, nature trails, a boulder maze, an animal park with fallow deer and a gem-mining sluice.

Polar Caves said it stays dedicated to preserving the web site as a secure vacation spot for guests and staff.

“We look forward to welcoming everyone back for the 2027 season,” officers said.