Natural monuments around Oer-Erkenschwick offer diverse landscapes at the edge of the Hohe Mark-Westmünsterland Nature Park and the Haard Forest. This region features a mix of natural formations, heathlands, and expansive forest areas. Visitors can explore unique natural landmarks and extensive trail networks. The area provides opportunities to experience native forests and diverse ecosystems.
Last updated: May 13, 2026
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While large areas of the region were still covered with heathland at the beginning of the 19th century, today the Westruper Heide is a remnant of that time. The approximately 90-hectare heath is in the immediate vicinity of the Haltern reservoir.
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The Hullern reservoir is the Stever dammed for drinking water production. This lake only has a "sandy beach" during long periods of drought, like here in August 2022. The SteverLandRoute runs along the banks of the Hullern and Halterner reservoirs and offers beautiful views of the lake from the cycle path, which is otherwise inaccessible. The fourth stage of the Steverland route always leads along the shore of the lake. The SteverlandRoute is the family bike path in Münsterland. Take a look at our collection! :)
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An experience to stand there on New Year's Eve👍 or at sunrise or sunset
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With its important past as a Roman base around the birth of Christ, Haltern am See has had town rights since 1289 and is a historical, up-and-coming medium-sized town, located at the northernmost point of the Lippe, embedded in the Hohe Mark, Haard and Borkenberge forest areas. The current urban area of Haltern am See was created as part of the municipal territorial reform in North Rhine-Westphalia in 1975. At that time, the town and the Haltern district, consisting of the communities Kirchspiel-Haltern (Holtwick, Lavesum and Sythen), Hullern and Lippramsdorf, were merged and expanded south of the Lippe to include the communities of Flaesheim (formerly part of the Datteln district) and Hamm-Bossendorf (parts of the Hamm community formerly part of the Marl district). The allocation of districts south of the Lippe to Haltern meant crossing a centuries-old border. A border that was the reason and prerequisite for the granting of town rights to Haltern by the sovereign and Prince-Bishop of Münster, Everhard von Diest, in the 13th century. Since 1908, Haltern am See has had a pumping station to pump drinking water for the northern Ruhr area. Water extraction has been steadily expanded; it helped the city to earn its decorative name "Haltern am See" and reached its provisional end point with the completion of the Hullerner Lake in 1985. A side effect of the area-intensive water management is the increased recreational value of the Haltern landscape, which, free of industry, has become even more attractive to visitors and locals thanks to the creation of the lakes. Today, the Haltern lakes with their boathouses, sailing harbor and seaside resort are the destination of many people seeking relaxation. But Haltern am See has more to offer visitors than just the lake. The attractive and varied landscape is often referred to as the lungs of the Ruhr area. The city is the heart of the Hohe Mark Nature Park. The extensive forests of the Haard and the Hohe Mark, as well as the Westruper Heide, Holtwicker Heide and Sebbelheide nature reserves, are accessible via a dense network of hiking, cycling, horse riding and walking trails. The pedestrian zones of the old town and the modern town centers of Sythen, Flaesheim, Lippramsdorf, Hullern and Lavesum are popular shopping and meeting places for residents and visitors alike.
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The Old Ride is a disused section of the Dortmund-Ems Canal. The 8 1/2 km long section extends from the Datteln canal junction to behind Olfen. A beautiful footpath and cycle path leads directly along the water.
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Beautiful section of the route in the direction of Olfen. You should definitely drive down along the water (not up on the road) to really enjoy it.
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Nice resting place, great water playground for children but gastronomy overpriced
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The best time to visit is of course usually August when the heather is in full bloom. But all other seasons are also beautiful in this unique landscape.
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Oer-Erkenschwick is home to some truly unique natural formations. One notable example is Das Baumtor (The Tree Gate) on Schulstraße, where two hornbeam trees have grown together and entwined to form a gate-like structure. This 130-year-old formation is visible from public ground and is officially registered as a natural monument.
Yes, the Heide am Stimberg (Stimberg Heath) is a significant natural feature. This heathland developed over decades, particularly within a former military exclusion zone. It's known for its vibrant violet blooms of common heather in late summer and provides a rare biotope for specialized species like sand lizards and wild bees. You can enjoy scenic views from the Stimberg plateau.
Several natural monuments are great for families. The Hullerner Reservoir offers a tranquil setting for breaks and tours. The Alte Fahrt between Datteln and Olfen, a disused canal section, is also family-friendly and perfect for walking or cycling. Additionally, the Halterner Reservoir is a popular spot with recreational value, though swimming is prohibited.
The region offers a variety of outdoor activities. You can find numerous hiking and cycling trails through the Haard Forest and Hohe Mark Nature Park. For specific routes, consider exploring the Mountain Hikes around Oer-Erkenschwick or the Cycling around Oer-Erkenschwick guides for detailed routes like the 'Haard Forest Trails' or 'Hullerner Reservoir' loops.
The best time to visit heathlands like the Westruper Heath or Heide am Stimberg to see the heather in full bloom is typically in August. During this month, the landscape transforms with vibrant violet hues, offering a particularly picturesque experience.
Yes, the Westruper Heath is noted for having wheelchair-accessible paths, making it a great option for visitors seeking easier terrain. This allows a wider range of people to enjoy the unique heathland landscape.
The natural monuments, especially the heathlands, are valuable biotopes for specialized species. At the Heide am Stimberg, you might spot sand lizards, wild bees, and bumblebees. The expansive Haard Forest and Hohe Mark Nature Park also provide habitats for diverse ecosystems, including various bird species and other forest dwellers.
For breathtaking views, the Hoheward Spoil Heap & Horizon Observatory offers the best panoramic views far and wide, including over the Ruhr area. The Stimberg plateau at the Heide am Stimberg also provides scenic vistas over the heath landscape, especially through its designated 'Heide-Rahmen'.
Absolutely. The Alte Fahrt between Datteln and Olfen, a disused section of the Dortmund-Ems Canal, is ideal for cycling. The Haard Forest also features nature-friendly mountain bike routes, and the general region offers many cycling opportunities, as detailed in the Cycling around Oer-Erkenschwick guide.
Visitors particularly appreciate the diverse landscapes, from unique natural formations to expansive forest areas and tranquil reservoirs. The less crowded atmosphere of places like the Hullerner Reservoir is often highlighted for peaceful breaks. The stunning views from the Hoheward Spoil Heap and the vibrant blooms of the heathlands also receive high praise.
Yes, the Haard Forest and Hohe Mark Nature Park offer well-signposted themed hiking routes, such as the 'LandStreifer' trail. These routes often showcase diverse landscapes and include educational points about nature, like a 'Klima-Allee' (climate avenue) or a 'Hirschkäferwiege' (stag beetle cradle), providing engaging experiences for hikers.
The Halterner Reservoir is significant as the largest drinking water extraction facility in the region. While swimming is prohibited, it offers considerable recreational value and is considered the 'lungs of the Ruhr area' due to its natural beauty and surrounding extensive forests of the Haard and Hohe Mark.


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