The Stone Flood — Franz Hohler

In 1881, seven-year-old Katharina Ryhner is sent up the mountain to stay with her grandmother while her mother gives birth to a sixth child. The little girl is worried. In her parents' inn down the valley all the talk has been of the danger of landslides, and it has not stopped raining for days. At school, the priest has started telling her the story of the Great Flood.
When the baby is born and the time comes for her to go home, Katharina, filled with an increasing and inexplicable sense of doom, refuses to leave. Soon afterwards she hears a deafening thunderclap. She looks down the valley: a huge chunk of the mountainside is hurtling towards her home.