Cueva El Soplao
Cantabria
Cueva El Soplao is a vast and unique cave system located in the Cantabrian region of Spain, spanning the municipalities of Rionansa, Valdáliga, and Herrerías. Renowned worldwide for its exceptional speleothems, including rare helictites and translucent draperies, the cave stretches over 17 kilometers, with about 6 kilometers open to the public. Formed during the Mesozoic era, particularly the Cretaceous period around 240 million years ago, it showcases an impressive variety of geological formations that attract speleologists and tourists alike. Initially discovered accidentally during mining operations, the cave was exploited for mineral extraction, supporting local families before being abandoned. Since 1975, speleological efforts revealed its true scientific and touristic potential, leading to its public opening in 2005 after careful preservation and development. Visitors explore diverse galleries such as the Gallery of the Ghosts, named for its ghost-like stalagmites, and the Gallery Gorda, notable for its underground lake and colorful calcite formations. The cave is fully accessible, including for wheelchair users, and hosts occasional cultural events like concerts. Ongoing research continues to uncover fascinating mineral deposits and microbial life within its depths, making El Soplao both a natural wonder and a site of scientific interest.
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Tip: The best time to visit El Soplao is during the warmer months when access roads are most convenient. Tickets should be purchased in advance, especially during peak tourist seasons, to ensure availability. The cave is fully accessible for visitors with reduced mobility, including wheelchair users. Guided tours provide comprehensive insights into the cave's geology and history. Visitors can also enjoy additional activities and facilities offered at the tourist complex. Check the official website for the latest updates on events and visiting hours.
Interesting facts
- •El Soplao contains one of the world's finest collections of helictites, stalactites that defy gravity.
- •The cave features an underground lake in the Gallery Gorda, one of the largest by volume in the cave.
- •The Gallery of the Ghosts is named after thick white stalagmites resembling ghostly figures.
- •Research in the cave has identified unique microbial stromatolites formed by manganese-oxidising bacteria.
- •A new mineral form, zaccagnaite-3R, was discovered within the cave.
- •It is accessible via a mining train that takes visitors through an old mining gallery.
- •El Soplao is one of over 6,500 caves found in the Cantabria region.
History
Discovered accidentally during mining drilling in the 20th century, El Soplao was initially exploited for mineral extraction, providing economic support to local families.
After decades of neglect, speleological exploration began in 1975, revealing the cave's exceptional geological value.
The Cantabrian Government officially opened the cave to the public in 2005 following the development of visitor infrastructure and preservation measures.
Since then, it has gained international recognition as a significant geological site and continues to be a focus of scientific study and tourism.
Place Guide
Gallery of the GhostsEarly 20th century (mining use)
A natural chamber distinguished by numerous thick white stalagmites that resemble ghosts, stretching 350 meters long and up to 35 meters wide in some areas. Historically used for mineral extraction and storage by early 20th-century miners.
Gallery Gorda
This gallery includes a large underground lake and is the first area visitors see upon entering the cave. It features a lighting system that highlights colorful stalactites and calcite helictites on the ceiling.
Gallery of the False Floor
A small chamber characterized by thin, thread-like rock formations that twist throughout the space.
Gallery of the Camp1970s (research camp)
A moderately sized gallery up to 10 meters wide, named after a research camp established during early explorations. It features mineral deposits dyed red and white.
Gallery of the Cauliflower
Known for large, often eccentric stalagmites that sometimes join the ceiling, this gallery shows signs of past earthquake activity.
Gallery of the Forest
A high gallery resembling a natural forest, filled with abundant columns formed by the union of stalactites and stalagmites. Earthquake evidence is also present.
Gallery Genesis
Located on the eastern side, this gallery reaches heights of up to 30 meters and extends over 160 meters in length. It is notable for its colorful salt deposits and giant stalagmites.
Contact
Phone: 952 07 62 72
