Natural monuments around Altenthann, a municipality in the Vorderer Bayerischer Wald, offer diverse landscapes for nature exploration. The area features geological formations and forested terrain, providing opportunities for outdoor activities. Prominent natural attractions include the Otterbachtal and the Hölle Nature Reserve, known for their unique characteristics. These sites contribute to the region's appeal for those seeking natural environments.
Last updated: June 24, 2026
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The Höllbachschlucht with its rock formations and block sea is a designated geotop Along the Höllbach, which here overcomes about 40 meters of altitude over a short distance with a relatively steep gradient, an impressive block sea stretches out, with blocks up to 5 m in diameter. The rounding of the blocks is not due to the river, however, but is the result of weathering: "wollsack-weathered" granite rocks were decomposed into individual "wool sacks" in the Pleistocene. The granite gravel was washed out, the blocks remained more or less in place. Bayerisches Landesamt für Umwelt (LfU). https://www.umweltatlas.bayern.de/standortauskunft/rest/reporting/sb_geotope/generate?additionallayerfieldvalue=372R070 https://de.wikipedia.org/wiki/Naturschutzgebiet_H%C3%B6lle_(Oberpfalz)#Geologie
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The cycle path is well-developed and signposted. Several rest stops are available. Before starting your bike tour, it's best to check the opening times and days.
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it's a dream here
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A very beautiful railway line cycle path with a moderate gradient and almost entirely surrounded by beautiful nature. There are rest stops at regular intervals along the path, and several newly created playgrounds also invite you to linger. Coming from Regensburg, the surface is initially asphalt, later changing to gravel.
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A perfect bike path for the start of the season 😀 especially if you're cycling from Falkenstein towards Regensburg. This works quite well if you take the bike bus to Falkenstein 🚐🚴🏻♀️ https://www.rvv.de/radtour-falkenstein-regensburg
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Wonderful combination of water and rocks. Great for climbing, even for kids.
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The Altenthann area is known for several unique natural monuments. Among the most popular are the Höllbach Valley (Hölle) Nature Reserve, characterized by its rugged, wooded terrain and granite boulders, and the Höllbachtal Trail, which offers a wild and romantic experience through a rocky forest gorge. Visitors also appreciate the Hölltal Rock Formations, where you can observe and even climb interesting granite rocks.
The Altenthann region, part of the Vorderer Bayerischer Wald, is defined by its distinctive geological formations. You'll encounter numerous large, rounded granite stones and imposing, moss-covered granite cliffs, especially along the Otterbach stream. The Höllbach Valley (Hölle) Nature Reserve is particularly known for its 'stone sea' of scattered granite boulders, creating a rugged and unique landscape.
Yes, the Otterbachtal offers family-friendly options. The popular hiking trail along the Otterbach stream, especially between Forstmühle and Hammermühle, has sections designed to be barrier-free, making it accessible for a wider range of visitors. The Waldgaststätte König, also known as the 'Korea-Wirt,' located in the Otterbachtal, provides a convenient stop with a beer garden and a small animal enclosure, making it a pleasant spot for families.
The natural monuments around Altenthann are beautiful year-round. Spring and autumn offer pleasant temperatures for hiking and vibrant foliage. Summer is ideal for enjoying the clear streams and outdoor refreshments. While winter can be picturesque, some trails, especially in rocky areas like the Hölle Nature Reserve, may require extra caution due to snow or ice, and sturdy footwear is always recommended.
You'll find a variety of hiking trails. The Otterbachtal features accessible paths along the stream, while the Höllbach Valley (Hölle) Nature Reserve offers a well-marked 4 km circular trail with moderate elevation gain, leading through its unique 'stone sea' of granite boulders. The Höllbachtal Trail is known for its wild and romantic character, winding through a rocky forest gorge. For more hiking options, explore the hiking routes around Altenthann.
Beyond hiking, the Altenthann area offers diverse outdoor activities. You can explore numerous cycling routes, including the Regensburg–Falkenstein Railway Cycle Path (Bernhardswald Section), which is well-developed and signposted. Mountain biking is also popular, with trails like the Otterbach Valley – Otterbach Stream loop. For more details on cycling, check out the cycling guide and the MTB trails guide around Altenthann.
The Hölle Nature Reserve is a captivating area with a 'stone sea' of granite boulders and the Höllbach stream. It's recommended to wear sturdy footwear due to the rocky terrain. A well-marked 4 km circular hiking trail allows you to explore its unique features and experience the distinctive acoustic qualities created by the stream flowing beneath the massive granite formations. The reserve is a testament to successful conservation efforts.
Many natural monuments in the Altenthann area offer excellent photographic opportunities. The Otterbachtal, with its crystal-clear water, rounded granite stones, and moss-covered cliffs, provides picturesque scenes. The 'stone sea' and rugged landscapes of the Höllbach Valley (Hölle) Nature Reserve, especially where the Höllbach stream meanders through, are also highly photogenic, capturing the raw beauty of the region.
Visitors frequently praise the wild and romantic atmosphere, particularly along the Höllbachtal Trail, where the sounds of the Höllbach accompany the journey through the rocky forest gorge. The unique interplay of water and granite, the cool forest floor, and the opportunity to immerse oneself in a peaceful natural setting are often highlighted. Many find the experience 'heavenly' despite the name 'Hölle' (hell).
While specific public transport routes directly to every natural monument might be limited, Altenthann itself is accessible. It's advisable to check local bus schedules or regional transport options to reach the vicinity of the natural monuments. Many visitors choose to drive to trailheads or use a combination of public transport and short walks to access these natural areas.
While the main natural monuments like Otterbachtal and Hölle Nature Reserve are popular, the broader Vorderer Bayerischer Wald offers many serene spots. Exploring the less-trafficked sections of the Otterbach stream or venturing onto some of the longer, more challenging hiking routes listed in the hiking guide for Altenthann can lead you to quieter natural settings away from the main tourist paths.
The Altenthann area is rich in granite formations. You'll encounter large, rounded granite stones in stream beds, imposing granite cliffs, and extensive 'stone seas' of scattered granite boulders, particularly in the Höllbach Valley (Hölle) Nature Reserve. These features are the result of ancient geological processes and give the landscape its distinctive rugged character.


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