Prachov Rocks is a sandstone rocky area, a nature reserve and part of the Bohemian Paradise Protected Landscape Area, which extends approximately 5 to 7 km northwest of Jičín between Prachov, Pařezská Lhota, Dolní Lochov and Blata in the Hradec Králové Region. The rock massif originated in the Mesozoic era as a shallow chalk sea. The Protected Site is under the care of the ANCLP CR - the Liberec Regional Office.
There are archaeological findings proving that people lived here in the prehistoric times of the Stone Age. The whole area of the rocks was a natural fortress of Slavic tribes, only a few places filled with valleys. Inside, the first settlement was built.
Probably by the end of 13. The Velis Castle was built on one of the basalt peaks with the adjoining Veliš manor. Several decades later, the estate was put into the possession of Vartemberks, and various settlements were created at the end of 15. the Trčková of Lípa is mentioned here as the owners. At the beginning of 17. century property was taken over by Smiřičtí from Smiřice, but in 1625 the estate was taken over by the Wallenstein family and annexed to its Frýdlant duchy. After the ruins of the manor were dismantled, settlements in the rocks disappeared.