Cave Valley Cetăţii (Valley of the Citadel) was declared a protected natural area of national value and natural monument. The cave has a total length of about 958 m, consisting of Hall (with a height of 20 meters and about 2,500 sqm) and a secondary gallery belly accessible only with specialized equipment and guide. The cave was opened for the first time in 1940, when hydraulic mining stuffing removed a stopper. Since 2010 has been assigned in custody of SC EMS Cave Ltd, and is open to the public. Every week there are concerts of classical music or jazz.