The Saalfeld Fairy Grottoes are a series of colorful limestone caves located in Saalfeld, Germany. Discovered in 1910, these caves are renowned for their stunning mineral formations, including vibrant stalactites and stalagmites. The grottoes are part of a former gypsum mine and are now a popular tourist attraction, drawing visitors with their unique beauty. Inside the grottoes, visitors can explore various chambers, each showcasing different geological features. The most famous chamber, known as the Fairy Grotto, is adorned with striking colors due to the presence of minerals like iron and manganese. Guided tours provide insights into the caves' history and geology.