This is the last trail section of the Sandsjöbacka Trail race that usually takes place during the second weekend of January.
http://www.sandsjobackatrail.se
The Änggårdsbergen nature reserve offers a varied landscape featuring valleys and ridges, winding walking paths, lakes and beautiful scenery. The varied ecological environment and fauna contains several examples of nature typical of Western Sweden, such as heathland and moorland. Änggårdsbergen lies next to the Botanical Gardens and stretches from the green parks of western Gothenburg towards the nature area Sisjön, south of the city of Mölndal.
More information:
http://www.goteborg.com/en/anggardsbergen