| Grey Stone of Trough | |
| Pushpin Label: | Grey Stone of Trough |
| Coordinates: | 53.9723°N -2.5774°W |
| Location: | Trough of Bowland, Lancashire, England |
| Governing Body: | Historic England |
The Grey Stone of Trough is an historic boundary marker in Bowland Forest High, in the Trough of Bowland, Lancashire, England.[1] A Grade II listed structure, erected in 1897 and standing on Trough Road,[2] it marks the line of the pre-1974 county boundary between Lancashire and the West Riding of Yorkshire. Historically, the Trough marked the westernmost boundary of the ancient Lordship of Bowland.
It is in sandstone and has a triangular section with inscriptions on the two sides that face the road.
"To Lancaster, 12 miles. Bay Horse, 10 miles"
"To Whitewell, 5 miles. Clitheroe, 12.5 miles"