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Germany
North Rhine-Westphalia
Hochsauerlandkreis

Sundern (Sauerland)

Top 20 Natural Monuments around Sundern

Best natural monuments around Sundern offer unique geological formations and scenic beauty within the Sauerland region. The landscape features diverse natural landmarks, including impressive rock formations, caves, and picturesque river valleys. This area provides opportunities to explore ancient geological processes and varied terrains. Visitors can discover a range of natural attractions, from historical sites to protected natural reserves.

Best natural monuments around Sundern

  • The most popular natural monuments is Feldhof Cave, a cave that is historically interesting and requires a flashlight for exploration. Its main hall is large, branching into several side arms.
  • Another must-see spot is Felsenmeer (Hemer), a natural monument and protected area since 1968. This "sea of rocks" features rugged subsurface from the Tertiary period, spanning approximately 600 meters long and 200 meters wide.
  • Visitors also love Seven Maidens Rock Formation, a natural monument consisting of seven groups of "virgin rocks". It offers views of the rock formations on a route towards Balve or Hemer-Brockhausen.
  • Sundern (Sauerland) is known for caves, rock formations, and river valleys. The region offers a variety of natural monuments to see and explore.
  • The natural monuments around Sundern are appreciated by the komoot community. They have received more than 2600 upvotes and feature over 2100 photos.

Last updated: June 26, 2026

Feldhof Cave

Highlight • Cave

The Feldhof Cave awaits you after a bend. It is very large and you should take a flashlight with you to explore so that you don't end up standing in the dark. A very interesting historical place.

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Felsenmeer (Hemer)

Highlight • Natural Monument

The Felsenmeer in the Sauerland of Hemer is a protected area since 1968, whose rugged subsoil originates from the Tertiary. This area of ​​the sea of ​​rocks is about 600 meters long, 200 meters wide and is 45 meters above the valley floor. It is divided into three areas, the Big Rock Sea in the northwest, the Small Rock Sea in the south and the paradise in the southeast.
The nearby Heinrichshöhle is a stalactite cave, which is open to visitors.

The Felsenmeer itself is freely accessible around the clock. Leaving the marked trails is prohibited and very dangerous, as crevices are often hidden under leaves and branches. This has already resulted in several deaths.

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Seven Maidens Rock Formation

Highlight • Natural Monument

Seven groups of virgin rocks, on a challenging route towards Balve or Hemer-Brockhausen.

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Ruhr Valley near Oeventrop

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the Ruhr runs through the Ruhr valley within Oeventrop. To a large extent, it was renatured.

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Kückelheim Tunnel (Bat Tunnel)

Highlight (Segment) • Structure

The SauerlandRadring cycle route, which runs along the former railway line through the Kückelheim Tunnel (also known as the "Bat Tunnel") from Fehrenbracht to Eslohe, is closed from late October to early April to accommodate the hibernating bats.

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Tips from the Community

Rolli
October 7, 2025, Ruhrtal bei Oeventrop

Great section on the Ruhr

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3

0

If you go behind the hut to the water you will find a bench with a view of the water

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1

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Personally, I think this is one of the most beautiful sections of the Ruhr Valley Cycle Route. It invites you to simply dismount, sit by the Ruhr and let your thoughts wander. It is also a good place to take a break.

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3

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At the manor of Wlidshausen

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5

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Completely incomprehensible why this beautiful river section is missing in the Komoot-Colleciton Ruhrtal-Radweg. Luckily this is signposted.

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8

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The sculptures in bicycle optics are very nice and are a great photo opportunity.

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6

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The sign looks good, but there is only a small moat behind it. Otherwise nothing to see

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7

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very nice tour

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7

1

Frequently Asked Questions

What are some unique natural monuments to explore around Sundern?

The Sundern region offers diverse natural monuments. You can explore the Feldhof Cave, a historically interesting site requiring a flashlight. Another impressive location is the Felsenmeer (Hemer), a protected "sea of rocks" with rugged subsurface from the Tertiary period. The Seven Maidens Rock Formation also provides unique views of its distinct rock groups.

What kind of natural features can I expect to see in the Sundern region?

The natural monuments around Sundern feature a variety of geological formations and scenic landscapes. You will find impressive rock formations, such as those at the Seven Maidens Rock Formation and the Felsenmeer. There are also caves like the Feldhof Cave, and picturesque river valleys, including the Ruhr Valley near Oeventrop, much of which has been renatured.

Are there family-friendly natural monuments around Sundern?

Yes, several natural monuments in the area are suitable for families. The Ruhr Valley near Oeventrop is family-friendly, offering scenic views along the river. The Kückelheim Tunnel (Bat Tunnel), part of a cycle route, is also family-friendly, though it's closed in winter for bat hibernation. The Seven Maidens Rock Formation is another family-friendly option for enjoying rock views.

Are there any natural monuments with historical significance?

Absolutely. The Feldhof Cave is noted as a very interesting historical place. The Felsenmeer (Hemer), a protected area since 1968, has a rugged subsurface dating back to the Tertiary period, offering unique geological insights. The Kückelheim Tunnel (Bat Tunnel) is also a historical site, as it's a former railway line now used as a cycle path.

What is the best time of year to visit the natural monuments in Sundern?

While many natural monuments are accessible year-round, spring and autumn are particularly recommended for exploring the region. During these seasons, the forests display vibrant colors, enhancing the scenic beauty for hiking and outdoor activities. Note that the Kückelheim Tunnel (Bat Tunnel) is closed from late October to early April for bat conservation.

Are there any natural monuments that are freely accessible?

Yes, the Felsenmeer (Hemer) is freely accessible around the clock. Similarly, the Feldhof Cave is also freely accessible, though you should bring a flashlight for exploration.

Do I need any special equipment to explore the natural monuments?

For exploring the Feldhof Cave, it is highly recommended to bring a flashlight to navigate its depths. For other sites like the Felsenmeer (Hemer), sturdy footwear is advisable due to the rugged terrain, and it's crucial to stay on marked trails as crevices can be hidden.

What outdoor activities can I do near the natural monuments around Sundern?

The region around Sundern offers various outdoor activities. You can find numerous hiking opportunities, including moderate and difficult trails, as well as easy family-friendly routes. Cycling is also popular, with options for touring bicycles and mountain biking. For detailed routes, explore the Hiking around Sundern, Cycling around Sundern, and MTB Trails around Sundern guides.

Are there hiking opportunities near these natural monuments?

Yes, the area provides extensive hiking opportunities. The Hohler Stein nature reserve, for instance, offers varied terrain with steep cliffs and dense forests, ideal for hiking. You can find routes ranging from easy family walks, like the Sternenweg Meinkenbracht, to more challenging trails around the Sorpesee. Check the Hiking around Sundern guide for specific routes.

Can I go cycling near the natural monuments in Sundern?

Yes, cycling is a popular activity in the Sundern region. The SauerlandRadring cycle route, which passes through the Kückelheim Tunnel (Bat Tunnel), is a notable option. There are also numerous routes for touring bicycles and mountain bikes around areas like the Sorpesee and Hennesee. For detailed cycling routes, refer to the Cycling around Sundern and MTB Trails around Sundern guides.

What do visitors particularly appreciate about the natural monuments in Sundern (Sauerland)?

Visitors appreciate the unique geological insights offered by sites like the Felsenmeer (Hemer), with its ancient rock formations. The opportunity for exploration in caves like Feldhof Cave and the scenic beauty of areas such as the Ruhr Valley near Oeventrop are also highly valued. The region's diverse landscapes provide a unique nature experience for all.

Are there any natural monuments that are accessible for visitors with mobility challenges?

The Felsenmeer (Hemer) is noted as being wheelchair accessible in some areas, offering a chance to experience this unique 'sea of rocks'. However, visitors should be aware that the Felsenmeer itself has rugged terrain, and it's important to stick to marked, safe paths.

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

BrilonOlsbergMedebachBestwigArnsbergSchmallenbergMeschedeWinterbergAltastenbergHallenbergEsloheMarsbergNaturpark DiemelseeRothaarkamm Am GrenzwegNaturpark Arnsberger WaldStadtwald Neheim / Luerwald

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