You are viewing a single comment's thread from:RE: Discovering the Swabian Jura - Part 1, The Ulm Minster [Mobile photography]View the full contextnsbachurin (51)in #photography • 6 years ago Do the blocks change to sandstone or to more durable material?
That is a great question! I assume that use sandstone that was sealed or coated to increase it's durability. But I don't no I have to say.