Saalfeld Fairy Grottoes, Historical alum slate mine in Saalfeld, Germany.
The Saalfeld Fairy Grottoes are an underground network of chambers filled with mineral deposits in many colors, created by water dripping over countless centuries. These formations shape the appearance of every passage and chamber with their varied hues and layered patterns.
The site began as alum slate mining in the 19th century when workers discovered the underground network during extraction operations. This discovery transformed a working mine into a natural wonder for future visitors.
Local legends have long woven these caverns into folklore, speaking of magical beings dwelling in the underground chambers and passages.
The underground passages are lit and accessible to visitors through guided tours that explain the geological details. Sturdy footwear is advisable since the ground is uneven and the temperature below stays consistently cool.
The Guinness Book of World Records recognized these grottoes in 1993 as the caves with the most mineral color variations worldwide. This recognition makes the location a geological destination that draws both scientists and curious travelers.
Location: Saalfeld
Elevation above the sea: 325 m
Website: http://feengrotten.de
GPS coordinates: 50.63500,11.34140
Latest update: December 6, 2025 16:01
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