Østmarka

Østmarka is a forested area to the east of Oslo and part of the congregation of woodland areas known as Oslomarka. The area is situated within the municipalities Oslo, Lørenskog, Rælingen, Ski and Enebakk. Østmarka is delimited to the west by populated areas of Oslo, to the north of communities of Skårer, Lørenskog and Rælingen and to the east by the lake Øyeren, to the south-east lies Enebakk and to the south-west Sørmarka, another forested area.

The change from Østmarka to Sørmarka takes place at the lake Langen. Østmarka is marked by its location on top of basement rock (more than 1 billion years old) containing easy-to-see folds that make up valleys and hills in the north-south direction. For this reason the terrain has a lot of hills, no matter where one goes.

Along the upper marine border (about 210 meters) the ice of the last ice age has left large amounts of gravel and sand. Sand, Sandbakken ("Sandy Hill"), Sandbekken ("Sandy Creek") and Grusbakken ("Gravel Hill") are all on about the same elevation. The sand mines at Ødegården have been left there by the ice. Beach snails have been found at Lutvann at an elevation of 200 meters.

Nature reserve Østmarka nature reserve has an area of 18 square kilometers. It received its status in 1990 and was expanded in 2002. The purpose of the protection is the conservation of a substantial, relatively untouched coniferous forest along with plant and animal life typical for this part of Oslomarka, and which has particular scientific and educational significance. The bulk of the reserve is located in Rausjømarka and is owned by the municipalities Oslo, Lørenskog and Rælingen.

Farms, cabins and restaurants in Østmarka Mariholtet Østmarkskapellet Rustadsaga Skullerudstua Sandbakken Vangen Losby Larsbråten Skjelbreia

Highest peaks Rank Name Elevation(MASL) 1 Barlindåsen Rælingen 398 2 Bjørnåsen (Bjønnåsen) • Rælingen 396 3 Ramstadslottet • Rælingen 394 4 Hektnerhøgåsen • Rælingen 377 5 Vardåsen • Enebakk 374 6 Fageråsen • Enebakk 373 7 Marikollen Rælingen 370 8 Tonekollen • Enebakk 368 9 Puttåsen • Oslo 363 10 Svartåsen (•) Lørenskog 361 11 Tronfjellet (•) Lørenskog 359 11 Skarpdunderen Lørenskog 359 13 Hengeberget • Enebakk 358 13 Mortvassåsen • Lørenskog 358 15 Haukåsen Oslo 357 16 Haugerkollen • Lørenskog 353 17 Snellås • Rælingen 350 18 Kjerringhøgda • Enebakk 349 18 Lisæterkollen • Lørenskog 349 20 Langmyråsen Rælingen 346 20 Mønekollen Lørenskog 346 22 Linfjellet • Lørenskog 345 22 Pipåsen • Enebakk 345 22 Grinderkollen • Enebakk 345 25 Sæterkollen Lørenskog 344 26 Svartåsen • Enebakk 343 (•) signifies that the trigonometric point is not situated on the peak's highest point.

Largest lakes

Name Area (km2) Børtervann 2.58 Langen 1.49 Nord-Elvåga 1.39 Nøklevann 0.79 Nordbysjøen 0.75 Bindingsvannet 0.61 Mosjøen 0.55 Sværsvann 0.47 Lutvann 0.41 Geitsjøen 0.36 Skålsjøen 0.32 Gjeddevannet 0.29 Halsjøen 0.28 Ramstadsjøen 0.27 Mønevann 0.26 Nordre Krokvannet 0.22 Søre Krokvannet 0.22 Tonevann 0.21 Røyrivann 0.17 Morterudvann 0.16 Tappenbergvannet 0.15 Åmotdammen 0.15 Myrdammen 0.07 Steinsjøen 0.07 Motre Krokvannet 0.03

Plank Road During the period when small sawmills were being increasingly used throughout the forests of Oslomarka and the timber export became a substantial industry - from ca 1750 and well into the 19th century - this engendered a big need for transportation. In Østmarka alone there were over 2,000 drivers and 4-5000 horses occupied with moving planks between Øyeren and Kristiania (today Oslo). It was too long to drive from Enebakk via Øyeren and Strømsveien to get to Kristiania. This is why the Plank Road was built. The Plank Road starts at Eikeberg and Børter in Enebakk - it crosses the ice on Børtervann and moves up to Rausjø and turns up towards Vangen and Skjelbreia, further over Eriksvann, Søndre Skytten, Elvåga, across to Nøklevann, Rustadsaga, Østensjøvannet and down to the city. The Plank Road is today open and tagged as a ski track.

Østmarka

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