Best natural monuments around Höchstberg are found within the Vulkaneifel district, a region shaped by its volcanic past in Rhineland-Palatinate, Germany. This area is renowned for its diverse geological formations, including volcanic lakes, craters, and unique rock structures. The landscape offers a tangible connection to Earth's dynamic history, with evidence of ancient seas and massive volcanic eruptions. Exploring these sites provides opportunities to witness unique natural features and engage in outdoor activities.
Last updated: April 26, 2026
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The Ulmen Maar lies 420 meters above sea level today, covers an area of 5.5 hectares, and is 36 meters deep. The bubbles at the maar's edge demonstrate that volcanism is still active. They bear witness to a turbulent past—but rest assured, there's no eruption in sight! A wall of various rocks and ash, up to 20 meters thick, surrounds the cone. For those interested, these testimonies to this explosive past are beautifully displayed in St. Matthias Church. This unique wall, with its different colored layers and rounded inclusions, is worth seeing for more than just geologists. The slopes of the maar basin are covered with a beautiful forest, which can be explored on a circular walk. A detour to the medieval castle ruins, from which the Crusaders once launched their campaigns, is recommended. The view from the crater rim over the maar and the Eifel beyond will take your breath away. Whether after a sweaty hike or a long drive, the blue of the Ulmer Eifel lake is all too tempting in summer. However, bathing in the maar is prohibited because it is designated as a nature and water protection area.
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The lower castle has completely disappeared. You can still see the beginning of the ring that connected the lower castle and the Ulmen city wall, a two-story outer wall of the palace, as well as a cistern and some foundation walls of other buildings. The old part of Ulmen Castle was built around 1074 AD and likely rests on the remains of a Roman settlement. In the Middle Ages, Ulmen Castle was further expanded and divided into the upper castle, whose remains of the walls still exist, and the lower castle, which extended to the banks of the maar river. Two knightly families lived in the castle, which is believed to have never been attacked or destroyed until 1673 due to its size. Only the Sun King's troops succeeded. It was rebuilt, but fell again in 1689 during the War of the Succession. However, Ulmen Castle was also rebuilt this time, with only the city wall being abandoned. With the invasion of Napoleon's soldiers, Ulmen also became French and later Prussian. The empty castle, whose last descendant died in 1801, was auctioned to a merchant from Cochem, who sold it as a quarry. When a devastating fire burned Ulmen to the ground in the 19th century, the residents of Ulmen rebuilt their houses with stones from the castle. That's why you can still see a coat of arms on some of the stables today. It wasn't until the early twentieth century that Ulmen Castle was declared a listed building and became the property of the municipality of Ulmen. The castle is always freely accessible.
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The Ulmener Maar is small but beautiful. Located in the middle of the Eifel and in the middle of the city, it is a wonderful destination. You can easily combine a walk around the maar with a walk around the neighboring Jungferweiher. Both have recently been connected by the Ulmener Maar tunnel, which runs under the A 48 motorway.
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The egg-shaped ejected particles are 6 cm or larger and deform the layers of earth when impacted. They are clearly visible here on the rock walls.
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A visit is worthwhile both in summer and in winter. However, the Ulmener Maar is a nature reserve, which is why bathing is strictly forbidden here!
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Here the Endertbach falls 7 meters to the valley. The waterfall, the so-called "Rausch", is next to the old mills the most beautiful highlight of our hike through the Enderttal. Really worth seeing.
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The upper castle was built on a slope above the Ulmen maar, while the lower castle (also called lower castle) was adjacent but below it. The exact time of construction is not known, but it is assumed that the upper castle was built around the year 1000. It was first mentioned in a document in 1074. The ruins of the upper castle are owned by the municipality of Ulmen and in 1913 were listed as a historical monument. It is freely accessible and there are regular events on its premises, including an annual medieval market on the last weekend in June. Source: Wikipedia
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Beautiful waterfall in the valley. Nice place to take a break.
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The Vulkaneifel region offers a wealth of unique natural monuments. Don't miss the impressive Boos Lava Bomb, a 120-ton basalt ball with explanatory panels detailing its formation. Another must-see is Ulmener Maar, one of the youngest Eifel maars, offering a glimpse into the region's volcanic past. For a refreshing experience, visit The Rausch Waterfall, where water rushes over thick stones, inviting a pleasant break.
Yes, several natural monuments in the area are great for families. The Rausch Waterfall is a beautiful spot for a short rest. The Boos Lava Bomb is particularly recommended for families with children, offering forest trails to explore. Ulmener Maar also provides a scenic setting for family outings, with the nearby Upper Castle of Ulmen ruins adding a historical element.
The Vulkaneifel is renowned for its diverse geological formations shaped by volcanic activity. You'll encounter numerous maars (volcanic lakes) like Laacher See, Pulvermaar, and Schalkenmehrener Maar. Other features include impressive rock formations such as the Gerolsteiner Dolomiten, the dramatic Wingertsbergwand cliff, and unique volcanic craters like Papenkaule. The region also boasts fascinating caves, including the Mühlstein Caves and the Birresborn Ice Caves.
The region around Höchstberg is perfect for various outdoor activities. You can explore numerous hiking trails that lead through forests and past maars. There are also dedicated running routes and cycling paths. Many maars, like Pulvermaar, offer opportunities for swimming and boating, while the rugged terrain is ideal for exploring.
Yes, the region blends natural beauty with history. Near Ulmener Maar, you can find the ruins of the Upper Castle of Ulmen, an 11th-century knight's castle offering beautiful views. The Mühlstein Caves provide insight into both human history and geology, as they were created by the mining of millstones. The Gerolsteiner Dolomiten are remnants of ancient reefs from a subtropical sea, offering a deep historical perspective.
The Vulkaneifel region is beautiful year-round. Spring and autumn offer pleasant temperatures for hiking and exploring, with vibrant foliage or blooming landscapes. Summer is ideal for activities like swimming and boating in the maars. Even in winter, the landscape offers a unique charm, and some trails are suitable for winter hiking, though conditions should be checked beforehand.
Absolutely. The Boos Eifel Observation Tower provides fantastic panoramic views of the Eifel, including the Nürburgring and the Hohe Acht. The Gerolsteiner Dolomiten, particularly the Munterley, also offer superb vistas over Gerolstein. Many maars, like Ulmener Maar, are surrounded by scenic trails that provide picturesque views of the lakes and surrounding landscapes.
Beyond The Rausch Waterfall, the region is home to the unique Dreimühlen waterfall, which is notable for growing approximately 10 cm each year due to its geological makeup. The Vulkaneifel is also famous for its numerous maars, which are water-filled volcanic craters, including the largest lake in Rhineland-Palatinate, Laacher See, and the deepest maar in the Eifel, Pulvermaar.
Visitors frequently praise the stunning geological formations and the tangible connection to Earth's history. Many appreciate the diverse landscapes, from serene volcanic lakes to dramatic rock formations, which are perfect for hiking and exploring. The opportunity for outdoor activities like swimming, boating, and climbing, combined with informative trails, also makes for a highly enjoyable experience.
Yes, the Vulkaneifel offers fascinating cave systems. The Mühlstein Caves, found near Hohenfels-Essingen and Rother Kopf, are impressive labyrinths created by historical millstone mining, accessible year-round. Additionally, the Birresborn Ice Caves are unique for maintaining consistently cold temperatures, never rising above 7 degrees Celsius, even in summer, and were historically used for ice storage.
The Teufelsschlucht, or Devil's Gorge, is a narrow gorge characterized by meter-high rock faces, cool and dark passages, and crevices overgrown with mosses and lichens. It's significant because walking through it feels like traversing a 200-million-year-old seabed, offering a rich geological experience and a unique natural environment.
Yes, Laacher See, the largest lake in Rhineland-Palatinate, is a water-filled caldera where traces of ongoing volcanic activity can still be observed. Mofettes, which are CO2 outgassings, are visible on its eastern shore, making it a living geological site and a fascinating example of the region's dynamic past.


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