The most various and highest part of the county is located around Otepää. The highest peaks are Kuutsemägi Hill (217 m), Meegaste Hill (214 m) and Harimägi Hill (212 m). The moraine landscape is varied by low rolling hills and many lakes, the biggest and the best-known lake is Pühajärv. On the edge areas of the upland the difference between the edges is small but the relief is strongly differentiated. To the south-east of Valga Basin, Karula Hills can be seen heading from the west to the east. The eastern part of the hills has especially varied relief. Heading to the west, the relief becomes lower and changes into lower hills continuing in the Latvia. There are many lakes in Karula. The best-known lake is Karula Pikkjärv and it is located on the northern edge of Karula Hills.