The cave was discovered by workmen blasting rock in the Biggesee limestone quarry in 1907.
Stalactites grow at an extremely slow rate, often taking 100 years to grow just one centimeter.
The cave environment is used for medical respiratory therapy due to its pollen-free and allergen-free air.
The cave contains rare 'Helictites,' which are dripstones that grow in irregular, spiraling directions contrary to gravity.
The name 'Atta' is derived from the historic name of the town, Attendorn.
Atta Cave is Germany's largest connected show-cave system, featuring a complex network of stalactites and stalagmites. Located in the Bigge Valley of the Sauerland region, it was discovered accidentally during limestone quarrying operations in 1907. The cave is famous for its exceptionally well-preserved dripstone formations, which are among the most varied in the country. Visitors explore the cave exclusively through guided tours that traverse a circular path. The cave remains a constant temperature of approximately 9 degrees Celsius throughout the year. It holds significant geological value due to its diverse speleothem types, including curtains, flowstones, and columns. The site includes an on-site museum area that provides context on the cave's discovery and geological development. It serves as an important site for both tourism and scientific study of karst topography in North Rhine-Westphalia.
The large, illuminated main cathedral cavern offers the best perspective of the cave's scale and dripstone density.
Bring a warm jacket, as the cave maintains a cool, constant temperature regardless of the outside weather.
Wear sturdy, non-slip footwear as the cave floor can be damp or uneven in sections.
Arrive early during peak holiday seasons, as tours operate on a first-come, first-served basis and can reach capacity.
Do not attempt to touch the cave walls or formations; the oils from human skin stop the growth of the minerals.
Open daily year-round, though it may have restricted operations on specific public holidays.
Touching the rock formations is strictly prohibited to prevent oils from skin damaging the delicate mineral surfaces.
