- COORDINATES: 39.7969041, -76.7348531 (Believed approximate to where marker may have been.)
- COUNTY: York
- EXPLANATION OF NAME: Originally 'Rocks In Glen' (This info comes from the marker's inclusion in a 1970 booklet by Clair Clawser.)
- FOUNDED: 1838
- MANUFACTURER: Undetermined
- STATUS: Believed to be long gone. Known only from Clair Clawser book. A replica marker was found on wall of borough building by G. Smith, Feb. 2016..
![Feb. 2016 photo by G. Smith](http://keystonemarkertrust.org/wp-content/uploads/GlenRockReplica22-285x160.jpg)
Feb. 2016 photo by G. Smith
![](http://keystonemarkertrust.org/wp-content/uploads/GlenRockMuralSnip1-285x147.jpg)
Photo of town Mural that includes the now long gone Keystone Marker
Original site likely on PA Route 216