1. Bøllemosen
The bog in the northern part of Jægersborg Hegn was named after the plant mosebølle (“bog whortleberry”), which grows in the area. The plant is a dwarf shrub with bell-shaped flowers and blue berries that look like blueberries but do not give you blue lips and fingers.
In the 1880s, the bog was the hide-out of a group of young vagabonds, who were named, bøller (“bullies”), after the plant. Perhaps they came here because of the berries of bog whortleberry, which is described in older literature as being slightly euphoriant. The word "bølle" thus derives from this otherwise peaceful and romantic forest.
Bøllemosen was originally a raised bog but, due to, amongst others, peat excavation until the aftermath of World War I there is today a lake surrounded by a so-called bog, which is a big rocking cushion of moss that acts like a wet sponge when you walk on it.
The water of the lake is oligotrophicand brownish, or so-called dystrophic, which is very rare in Denmark. One of the few other dystrophic lakes is Store Gribsø in Gribskov.
To the west of the bog are Terrasserne where the peat cut from the bog was dried.
2. Rundforbilærkene
In the north-western part of the forest, north of Domænevej, you will find around fifty larch trees, called Rundforbilærkene. They were planted approximately 130 years ago to provide timber suitable for ship masts and vanes for windmills which the now-more-than-35-metre-tall, slim conifers very much are. However, time has overtaken wooden ships and mills built from wood but sometimes a tree is sold if the vane of an old mill needs restoring.
Rundforbilærkene are of the species European larch, which was introduced into Denmark. The quality is so superior that these larches have been selected for breeding, like some prize bull, and the Rundforbilærkene have provided seeds for millions of larches across Europe.
3. Mølleåen
To the south, Jægersborg Hegn borders Mølleåen, the 36-km-long creek which originates from Bastrup Sø and flows into Øresund at Strandmøllen.
Mølleåen cuts through a valley formed during the latest ice age. It was dammed already during the Middle Ages to power the nine watermills that were built for milling flour.
400 years ago, several major industrial companies were established near the mills and Mølleådalen is, thus, the cradle of Danish industry. One of the companies was Raadvad which, amongst others, manufactured kitchen utensils and which once employed the silversmith Georg Jensen. Due to the then remote location, a small town was built for the workers. Today, Raadvad is home to a centre of excellence for old crafts and the inn is still open.
Strandmøllen at Øresund was originally a paper mill. In the period 1920-92, hydrogen was produced there and now it is the headquarters of Strandmøllen Industrigas A/S.
4. Parforcejagtveje
Skodsborgvej, Køromvej, Mathiasvej, Blinde Allé and the western end of Domænevej probably belong to the system of roads that was used for par force hunting and continues in Dyrehaven.
5. Oldtidsminder
There are burial mounds everywhere in Jægersborg Hegn. The most significant are Rævehøjene south of Skodsborgvej and Guldhøjen at Køromvej.