Natural monuments around Rastenfeld are defined by a landscape shaped by the Ottenstein Reservoir, known for its fjord-like arms and wooded shores. This area in Lower Austria features a mix of water-formed terrain and ancient geological formations. The region provides opportunities for exploring natural features and historical sites within its varied environment.
Last updated: July 8, 2026
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During excavations in the Eichmayer Cave, remains of 27 mammal and 8 bird species were found, including Magdalenian artifacts.
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Please do not deface it!!! Below Hartenstein Castle lies the Gudenus Cave, which was carved out of the riverbank and inhabited by Neanderthals during the Stone Age. Traces of settlement dating back almost 100,000 years were discovered there, including hand axes and other tools. Due to historical preservation, the bridge could no longer be rebuilt unless the cave was sealed.
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An impressive natural monument. The climb, approximately 15 minutes and 85 meters in elevation, is well worth it. The Stone Hall is part of the Kremstal Canyon, a region with other interesting caves such as the Gudenus Cave and the Eichmayer Cave. A 30-meter-wide and eight-meter-high rock roof. This sheltered site was frequented by Ice Age hunters. Neanderthal stone tools from the Middle Paleolithic and the end of the last Ice Age were found here.
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The entrance to the cave is overgrown, which is a pity.
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The bridge at the Gudenus Cave has been gone for 2 years. Accessible via stones at low water
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A great natural monument in a great environment.
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Another Kremstal cave, like the other caves, a very impressive natural monument!
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The Gudenus Cave was used by Neanderthals 10,000 years ago, that's humbling, impressive natural monument!
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The Rastenfeld area is characterized by its distinctive natural monuments, including impressive caves and rock shelters. You can visit sites like Gudenus Cave, a 30-meter-long passage cave, and the Steinerner Saal Rock Shelter, known for its 30-meter-wide rock roof. The region also features unique rock formations such as the Riesenstein Rock in the Kamp River.
Yes, many of the natural monuments in the Rastenfeld area hold significant historical value. For instance, the Steinerner Saal Rock Shelter was frequented by Ice Age hunters, with Neanderthal stone tools found there. Similarly, Gudenus Cave has yielded significant Stone Age artifacts, indicating its use by Neanderthals approximately 70,000 years ago.
Absolutely. The area around Rastenfeld offers numerous hiking opportunities, especially around the Ottenstein Reservoir. Popular routes include the 'Ottenstein reservoir – Lichtenfels Castle Ruins loop from Rastenfeld' and the 'Nature, Energy, Kraft Trail'. You can find more details and routes in the Hiking around Rastenfeld guide.
Yes, several natural monuments and activities are family-friendly. The Thousand-Year-Old Oak is an impressive sight for all ages. Additionally, the Ottenstein Reservoir offers granite rock formations along its shoreline that provide adventurous climbing opportunities for children and adults, and in some areas, allow for jumps into the cool water.
The Ottenstein Reservoir, a prominent natural feature, is a hub for various outdoor activities. You can enjoy water sports like swimming, sailing, windsurfing, and pedal boating. Boat rentals and lake cruises are also available. For land-based activities, there are extensive opportunities for hiking and cycling along the forested shores. Explore routes in the Cycling around Rastenfeld or Gravel biking around Rastenfeld guides.
Generally, dogs are welcome on trails and in natural areas around Rastenfeld, but it's always advisable to keep them on a leash, especially in protected areas or near wildlife. Specific rules may apply to certain indoor attractions or sensitive natural sites, so check local signage.
The natural monuments around Rastenfeld are beautiful year-round. Spring and autumn offer pleasant temperatures for hiking and exploring, with vibrant foliage in autumn. Summer is ideal for water activities at the Ottenstein Reservoir. Even in winter, the landscape can be picturesque, though some trails might be less accessible.
While the major caves like Gudenus and Steinerner Saal are well-known, the Eichmayer Cave is another impressive natural monument in the Kremstal region, though it can be quite hidden without clear signposts. The Thousand-Year-Old Oak is also a magnificent, often overlooked natural wonder that commands attention once discovered.
The wooded shores and tranquil bays of the Ottenstein Reservoir, along with the surrounding forests, provide habitats for various wildlife. Keep an eye out for local bird species, deer, and other forest animals, especially during quieter times of day like early morning or late afternoon. The fjord-like landscape offers a serene environment for nature observation.
While specific cafes might not be directly adjacent to every natural monument, the Rastenfeld municipality and areas around the Ottenstein Reservoir offer dining options. It's recommended to check for restaurants or cafes in nearby towns or directly at the reservoir's recreational facilities before your visit.
Parking is generally available at key access points for popular natural monuments and trailheads, particularly around the Ottenstein Reservoir. For specific, more remote sites like some caves, parking might be limited to roadside pull-offs or small designated areas. Always look for official parking signs.


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