Carr's Tunnel is an abandoned railway tunnel in Greensburg, Pennsylvania. Known locally as Witches' Tunnel, it was originally built in 1856 for the Pennsylvania Railroad. It was brick-lined in 1868-1869. The railway line it was associated with, now dismantled, once ran from Donohoe Station to the now-vanished Carney Station, near the Carney coal mine, and on to Latrobe.
|Constructed||rock bored, brick lined|
|No. of tracks||double|
In recent years single-family residences have been built directly adjacent to the abandoned tunnel.
- Video of the tunnel 
- Gillette, Halbert Powers (1904). Rock Excavation, methods and cost (online book). New York: M.C. Clark. p. 338. Retrieved 2009-04-29.
- "Carney Mine, Carney Station". Virtual Museum of Coal Mining in Western Pennsylvania. Archived from the original on 3 July 2015. Retrieved 9 November 2014.
- "Former PRR mainline tunnel outside Greensburg". Pennsylvania Railroad Technical and Historical Society. Retrieved 10 November 2014.