Blue stone
Blue stone is the name of the following rock formations:
- Blauer Stein (Blumberg) , rock formation near Randen, Baden-Wuerttemberg
- Blauer Stein (Krahne) , boulder near Krahne, Brandenburg
- Basalt crater Blauer Stein , former opencast mine in Windeck , North Rhine-Westphalia
See also:
- Blue stones , hallway sign
- Bluestone (disambiguation)
