Clausthal-Zellerfeld, located in the Harz National Park, Germany, is considered very safe for solo female travelers. The local community is welcoming and helpful. The town is small and peaceful, renowned for its clean, quiet environment and lower crime rates as compared to bigger cities. Public transportation like buses and trains are reliable. However, as in any destination, it is always advisable to be aware of your surroundings and take common-sense precautions.