Šluknov - Small organ

In the town of Šluknov, in its southern part, on Křížové vrch, called "Krojzberg" by the locals, a rock formation emerges from the columnar separation of slowly cooling basalt lava. There are several similar formations in northern Bohemia. The most famous is the manor rock near Kamenické Šenov.
The formations were created by the outpouring activity of former volcanoes. The flowing lava slowly cooled. When cooling, matter…