Best natural monuments around Marum offer a range of natural attractions for outdoor exploration. The region, part of the Groningen Province, features diverse landscapes including lakes and historical natural formations. These areas provide opportunities for recreation and connecting with nature. Marum's natural environment is characterized by its accessible trails and unique geological features.
Last updated: June 23, 2026
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It is a beautiful, medium-sized dolmen and it is located in a touristically attractive area: 150 meters from the paved road in a small sand drift. The dolmen lies diagonally against the slope of a sand hill. It is quite complete. All 12 supporting stones, all six capstones and the two keystones are present. Even the gate is complete with two supporting stones and one capstone.
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The dolmen at this location is dolmen D1 in Steenbergen. It is a fairly large dolmen, examined and numbered by prof. Van Griffen. This is therefore not the so-called N (Fake) 1 dolmen. This N1 dolmen does exist, is much smaller and is indeed fake but is located elsewhere in Steenbergen.
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Almost indistinguishable from the real thing
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No idea what to believe. Nicolaas Westendorp published a book in 1815, this is a travel report from 1811 or 1812 and hunebed D1 is mentioned in it. This hunebed is the northernmost hunebed in the province of Drenthe and has therefore been given number 1. The archaeologist professor Albert van Giffen, who researched hunebeds, numbered them from north to south per province. He found the 6 capstones, 12 side stones, 2 keystones, 2 gate side stones and 1 gate capstone in a disorderly state, two capstones were broken. I can't find number N1 of Nep? anywhere, because it gives D1 as a number. The hunebed is 11.6 meters long and 3.6 meters wide. The cellar contents have never been investigated. Maybe that's why it's Nep?? I don't think this hunebed is much different from the one I saw in Borger. In Borger near the church they were quite a bit bigger. Fake dolmens look smaller to me.
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The Freulevijver, located in the Oude Bos between Wijnjewoude and Bakkeveen, is an idyllic and historic place. The forest was created around 1880 by the noble family Lycklama à Nijeholt as a private park and production forest. The pond was created by a dike breach of the nearby Koningdiep, and was enlarged around 1900 by Jonkvrouw Eritia Lycklama à Nijeholt. Although the original tea house and boathouse have disappeared, the location remains a beautiful spot for a picnic, with a natural gazebo that is reminiscent of the former charm of the place.
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The natural monuments around Marum offer diverse landscapes. You can explore serene lakes, ancient pingo ruins, and areas with forests and heathland. Examples include the historic Freulevijver, a lake that is an old pingo ruin, and the unique Pûpedobbe Pingo Ruin, which serves as a climate archive.
Yes, several natural monuments in the Marum area are suitable for families. The Freulevijver offers a pleasant setting for relaxation and boating. The Lieversche Diep Fish Pass provides varied walks through different terrains. Additionally, the Dolmen D1, Steenbergen, is a historical site that can be interesting for all ages. For a unique interactive experience, consider Het Blote Voetenpad (Barefoot Path) in Opende, which features playful obstacles and diverse natural terrains.
Beyond exploring the monuments themselves, the region offers various outdoor activities. You can enjoy cycling on routes like the 'ATB Route Marum: Trimunt – Scenic Road Through the Forest' or 'Coendersborg Estate – Church of Tolbert loop'. Road cycling options include the 'St. Hippolytus Church, Olterterp – Pûpedobbe Pingo Ruin loop'. For mountain biking, trails like 'Jan Dijkzand Garden Center – Coendersborg Nuis loop' are available. Many of these routes can be found in the Cycling around Marum guide, the Road Cycling Routes around Marum guide, and the MTB Trails around Marum guide.
Yes, the area features several sites with historical significance. The Freulevijver is an old pingo ruin that was part of a private park with an estate and tea dome built around 1880. The Dolmen D1, Steenbergen, is a reconstructed dolmen offering insight into local ancient history. Additionally, the Pûpedobbe Pingo Ruin holds geological history, as pingo ruins are valuable climate archives.
For water-based recreation, Freulevijver offers opportunities for boating. Nearby, De Hoornse Plas is a popular lake for swimming, boating, and picnicking, featuring sandy beaches and beach bars. Lake De Leijen, created by peat mining, also has a beach with catering and camping facilities on its eastern side.
Yes, there are various walking opportunities. The Lieversche Diep Fish Pass offers varied walks through forest, heathland, and along water. For a unique sensory experience, Het Blote Voetenpad (Barefoot Path) in Opende provides both a shorter 1.6 km route and a longer 3.4 km route through diverse natural terrains. Many of the nearby cycling routes also include scenic sections suitable for walking.
The best time to visit largely depends on your preferred activities. For water-based recreation like swimming and boating at De Hoornse Plas or Lake De Leijen, the warmer months are ideal. Spring and autumn offer pleasant temperatures for walking and cycling, with beautiful seasonal colors. The region's natural beauty can be appreciated year-round, though some facilities might have seasonal operating hours.
Yes, particularly at Lake De Leijen, which is known as a nature reserve with many special bird colonies. The varied landscapes, including forests and water bodies, also provide habitats for other local wildlife, offering opportunities for observation.
Many of the paths and trails around Marum's natural monuments are generally accessible and suitable for various fitness levels. For instance, the Lieversche Diep Fish Pass offers varied walks. The nearby cycling and MTB routes often include 'easy' and 'moderate' difficulty grades, indicating that many areas are suitable for casual exploration.
Some areas are dog-friendly. For example, the Lieversche Diep Fish Pass allows for walks where dogs can be off-leash in certain sections. It's always advisable to check specific regulations for each location, especially regarding leash requirements, to ensure a pleasant visit for everyone.
Absolutely! Het Blote Voetenpad (Barefoot Path) in Opende offers a truly unique and immersive way to connect with nature. This path encourages visitors to walk barefoot through diverse natural terrains, including mud, water, and grass, incorporating playful obstacles for a stimulating sensory experience. It's a fun and engaging activity for all ages.


Extend your search for the best caves by checking out these guides of the top ones around Marum: