Demanding, rarely steep day trip, which allows a complete insight into the typical Oberharzer nature | Special signposting in the national park | Many hikers! | Technically demanding route at the Oderteich and on the Bohlenweg to the Sonnenberg - dangerous in rain! | Several federal road crossings! | 3 Single-Trail-Passage. The half-day tour leads uphill and down to the triangular pile, thus providing a good insight into the typical Oberharzer nature with high bogs, ponds, spruce forests and viewpoints.