A fascinating journey into the earth at the historic salt mines, just 30 minutes from Zaragoza
The Remolinos Salt Mines are a fascinating underground world of crystalline galleries carved over centuries, located just 30 minutes from Zaragoza and offering one of the most unique geological experiences in Aragón. Buried beneath the small town of Remolinos on the banks of the Ebro River, these mines hold the story of a resource that shaped the local economy, culture, and even the landscape itself.
The salt deposits at Remolinos date back more than 200 million years to the Triassic period, when the region was covered by a vast inland sea. As the sea evaporated over millennia, it left behind enormous layers of halite — common salt — mixed with clay and gypsum. Today, those layers form a maze of underground chambers and passageways that stretch for kilometres beneath the town.
What makes the Remolinos mines particularly special is the purity of the salt. Some galleries reveal almost translucent walls of white and pinkish crystal that shimmer under the tour lights, creating an otherworldly atmosphere. The main chamber, known as the Cathedral, rises over 15 metres high and is carved entirely from salt rock — a sight that rivals the famous Wieliczka salt mines in Poland, albeit on a more intimate scale.
Commercial salt mining in Remolinos began in earnest in the 19th century, though local extraction had existed for centuries before. The salt was primarily used for preserving food — especially the region's renowned cured meats and cheeses — and for industrial purposes. At its peak, the mine employed hundreds of workers who extracted thousands of tonnes of salt annually using pickaxes, explosives, and, later, mechanical saws.
Mining continued until the mid-20th century, when competition from sea salt and more efficient production methods made the operation uneconomical. The mines were abandoned for decades before the Remolinos town council recognised their tourism potential and began offering guided tours in the early 2000s. Today, the mine is protected as part of Aragón's geological heritage.
The guided tour lasts approximately 90 minutes and takes you through the main galleries and chambers. Your guide will explain the mining techniques used over the years, point out geological features, and share stories of the miners who worked in these dark, dusty tunnels. The temperature inside stays at a constant 14–16°C, providing a welcome escape from Zaragoza's scorching summer heat.
Highlights of the visit include the Crystal Gallery, where salt crystals sparkle on every surface; the Machinery Room, which preserves original mining equipment; and the aforementioned Cathedral chamber, with its impressive dimensions and remarkable acoustics. The tour ends with a short video about the history of salt in the region.
Location: Remolinos, 30 km from Zaragoza via the A-68 motorway
Tour times: Weekends and public holidays, usually at 11:00 and 13:00. Check with the Remolinos town hall for seasonal variations.
Duration: Approximately 90 minutes
Price: Around €8 for adults, €5 for children (ages 5–12)
Booking: Recommended. Call the Remolinos tourist office or book online.
Accessibility: Not suitable for wheelchair users or those with mobility issues due to uneven terrain and stairs.
Remolinos is located 30 km northwest of Zaragoza, about a 25-minute drive by car via the A-68 motorway. There is also a bus service from Zaragoza's Delicias station.
No, visits to the Remolinos Salt Mines must be guided for safety reasons. Tours run on weekends and public holidays, and last approximately 90 minutes. It is advisable to book in advance through the Remolinos town hall.
Wear comfortable clothing and sturdy closed-toe shoes, as the terrain inside the mine is uneven and can be muddy. The temperature inside stays around 14-16°C year-round, so bring a light jacket even in summer. Helmets are provided.
The salt deposits at Remolinos formed over 200 million years ago during the Triassic period. Commercial extraction began in the 19th century and continued until the mid-20th century, leaving behind an extensive network of galleries and chambers.
Yes, children aged 5 and older can visit the mines. The tour is educational and visually impressive, making it an excellent family outing near Zaragoza. Younger children may find the helmet and darkness challenging, so use your judgment.
Remolinos sits in the comarca of Ribera Alta del Ebro, an area rich in natural beauty and heritage. After your underground adventure, consider visiting the nearby Mallos de Riglos, the iconic red conglomerate rock formations that attract climbers from across Europe. The drive from Remolinos to Riglos takes about an hour and crosses some of Aragón's most striking landscapes.
If you are travelling with children, the Dinópolis theme park in Teruel is a fantastic option, offering a full day of dinosaur-themed entertainment and education. It sits about two hours south of Remolinos, making it feasible as a combined weekend trip from Zaragoza.
While Remolinos itself has limited accommodation, staying in Zaragoza city centre gives you the best base for exploring both the mines and the wider region. Maestro Luna and Las Armas are two beautifully appointed apartments in the historic centre, each offering full kitchens, comfortable bedrooms, and easy access to Zaragoza's main sights, restaurants, and transport links. From either apartment, the drive to Remolinos is a straightforward 25-minute trip along the A-68.
Make Zaragoza your base. Our boutique apartments are just minutes from all attractions.
Maestro Luna Apartment Las Armas Apartment