Ralsko (mountain)

Ralsko (German: Rollberg or Roll) is a mountain in the Liberec Region of the Czech Republic.

It is the highest peak of the Ralsko Uplands and of the entire Bohemian Table subprovince.

The peak of the mountain formed as a volcanic upheaval during the geologic Tertiary Period.

The oldest preserved parts of the castle are the two residential towers, which were probably built as early as the 14th century.

A ruse was used to do this, and soldiers secretly entered the castle while the cattle were returning from the pasture.