Altitude: 731 m above sea level
Artificial lake Olšina was probably founded in the beginning of 15th century and the first written mention is from 1458. From the 16th century it belonged to monastery in Zlatá Koruna and after abolishing of the monastery it became a part of Český Krumlov estate. Lake Olšina is one of the highmost situated ponds in Bohemia (altitude 731 meter above sea level). Its area takes 138 hectares.
Location: 5 km from Horní Planá near settlement Hodňov