Deeper into the Østmarka woods from the Haraløkka crag, you'll find Bukkeberget. The sector mainly consists of a relatively new, high density area called Haraparken and some decently sized boulders and walls spread around the area. There are mostly easy to intermediate grades here. Wedged between Ulsrudvann and Nøklevann, it's a nice area to spend the day and have a rest at the lakeside for lunch.
⭐ Sector Haraparken might be the best area for complete beginners to try outdoor bouldering in Østmarka. The area consists of many, low rocks with good landings, the approach is short, and almost all problems are low grade. A bit further into the woods you find the Nyresteinene sector, which consists of two boulders with many good quality lines on them. In the north-eastern part you'll find Bukkesteinen and Pas de-steinen, which offer few but nice routes on various grades. These two boulders are located in a fairly humid area, so it takes a while to dry out after wet weather.
🌧️ After rainy weather, try areas Haraparken and Nyresteinene first, which should dry out fairly quickly.
Østmarka is a nice destination all spring, summer, and autumn. If a lot of snow fell during the winter, it can take a while for the snow and ice to melt out, particularly in shaded areas, and can resulting in seepage for a long time through spring. It's also possible to climb during winter if you don't mind sub-zero temperatures, but wet snow/ice can make it impossible to clean the rocks (especially the top outs).
⛰️ Like the rest of Østmarka, Bukkeberget also consists of ancient bedrock, mostly gneiss, a metamorphic type of rock. You can encounter many types of textures and patterns in the area, like quartz crimpers, big boulders, and rocks speckled with garnets.
Some of the less popular boulders have not been maintained in the last few years, and may be overgrown. The topo images are from 2020, so keep that in mind and bring a steel brush if it looks like it needs some maintenance.