Category Archives: Ruins

A Mauerzahn at Grünenfels castle ruin (CH): Surviving 2011?

Posted on December 31, 2010 by Per Storemyr

Switzerland has a wealth of medieval castle ruins. In the Canton of Graübunden they are particularly numerous with, for example, the valley of Vorderrheintal (Surselva) displaying no less than about 50 ruins. Some are almost gone, others are kept in … Continue reading →

Posted in Ruins, Switzerland, Weathering history | Tagged Graubünden, Grünenfels, historic photos, ruin, Surselva, Switzerland, weathering | Leave a comment

Stone weathering at the westernmost coast of Norway

Posted on November 15, 2010 by Per Storemyr

As probably one of only very few monuments globally, the ruined Selja medieval abbey off the westernmost coast of Norway is built from a metamorphic olivine stone (dunite) rich in talc. The combination of a hard olivine matrix and soft … Continue reading →