[Jizera] Kamenice river (Kamnitz) is a tributary of the Jizera river in the Czech Republic. It rises from several source streams in the Jizera Mountains (Isergebirge) of Bohemia at Holubník (the `pigeon-house`) (1070 m). Below the former crystal production village of Kristiánov (Christiansthal), a locality in the Bedřichov (Friedrichswal...