Qualla: Stumphouse Mountain Tunnel

Stumphouse Mountain Tunnel: Introduction

Sun, 22 Feb 2026 00:00:00 GMT

Photo credit Workman, CC BY-SA 3.0. For two decades, Clemson University aged blue cheese inside an abandoned railroad tunnel in the mountains of Oconee County. The constant 50-degree temperature and 85 percent humidity deep inside Stumphouse Mountain turned out to be ideal conditions for cultivating the Penicillium mold that gives blue cheese its distinctive veining and sharp bite. The tunnel's builders -- Irish laborers who had crossed an ocean to blast through Appalachian granite -- never imagined their unfinished bore would find its highest purpose as a cheese cave. But then, almost nothing about Stumphouse Mountain Tunnel has gone according to plan.

Image: Workman | CC BY-SA 3.0

Stumphouse Mountain Tunnel: A Million Dollars Into the Mountain

Sun, 22 Feb 2026 00:00:00 GMT

Photo credit Workman, CC BY-SA 3.0. In 1852, the George Collyer Company of London dispatched Irish workers to the Blue Ridge foothills of South Carolina with an audacious assignment: punch a 5,863-foot railroad tunnel through Stumphouse Mountain for the Blue Ridge Railroad. The laborers built a settlement called Tu...

Image: Workman | CC BY-SA 3.0

Stumphouse Mountain Tunnel: Three Tunnels, Three Fates

Sun, 22 Feb 2026 00:00:00 GMT

Photo credit Bill Fitzpatrick, CC BY-SA 3.0. Stumphouse was not alone. The Blue Ridge Railroad complex included two companion tunnels, each with its own story of incompletion. Middle Tunnel, a quarter mile from Stumphouse, was actually finished -- the only one of the three to reach completion. But time and neglect took thei...

Image: Bill Fitzpatrick | CC BY-SA 3.0

Stumphouse Mountain Tunnel: The Cheese Years

Sun, 22 Feb 2026 00:00:00 GMT

Photo credit Workman, CC BY-SA 3.0. The tunnel sat dormant through the Civil War and for nearly a century afterward. Then, in 1941, food scientists at Clemson University realized that the tunnel's interior -- a steady 50 degrees Fahrenheit with 85 percent humidity -- replicated the natural cave environments used to...

Image: Workman | CC BY-SA 3.0

Stumphouse Mountain Tunnel: Saved From the Auction Block

Sun, 22 Feb 2026 00:00:00 GMT

Photo credit Workman, CC BY-SA 3.0. Today, Stumphouse Mountain Tunnel operates as a city park managed by Walhalla, paired with nearby Issaqueena Falls. Visitors walk a few yards from a gravel parking lot into the tunnel's mouth and feel the temperature drop sharply -- the interior holds at 50 degrees year-round reg...

Image: Workman | CC BY-SA 3.0

Stumphouse Mountain Tunnel: Into the Dark

Sun, 22 Feb 2026 00:00:00 GMT

Photo credit Workman, CC BY-SA 3.0. The tunnel earned its place on the National Register of Historic Places in 1971, recognized not for what it accomplished but for what it attempted. It sits within Sumter National Forest, surrounded by the lush green canopy of the Blue Ridge escarpment, a landscape of waterfalls a...

Image: Workman | CC BY-SA 3.0