A small local forest and training area close to Østmarka and Oppsal Arena. It is used both summer and winter by people from the area and have illuminated tracks and many small paths.
Be aware that it is both a large school and sports ground nearby, and many children is passing by and playing in the forest. I hope you use this opportunity to walk around this little forest, and experience its nature and feel, despite close proximity to one of Oslos oldes suburbs (Oppsal).
Link to map of Godliaparken from Oppsal IF orienteering group.
Closest subway stations are Godlia (line 3) or Tveita (line 2), I suggest a round trip through the park.
The cache is a PETling, containing a log book, pencil and the Geocache info sheet.