Rock Crystal (2004)

"Rock Crystal" is a 2004 Adventure movie directed by Joseph Vilsmaier and starring by Dana Vávrová, Daniel Morgenroth. The towns of Gschaid and Millsdorf are in a constant state of feuding with each other. Nevertheless Gschaid's Sebastian and Millsdorf's Susanne are married. In her husband's town Susanne has to put up with daily harassment by the locals, which also extends to her two children. Finally she moves back to her parents, alone. When the children, who long to find a magical crystal they believe has the power to reunite the family, get lost in a howling blizzard on the exposed mountain after bringing their mother her Christmas presents, both towns set up rescue missions.