Olmos de Atapuerca Iron Mine

In Olmos de Atapuerca, about 3 km from the village of Atapuerca, the sierra does not only hold fossils: it was also mined for iron. Today it is visited as Mina Esperanza, a restored mine with more than 200 metres of underground galleries, original wagons and rails and an underground mineral museum. It is a good complement for anyone who has already seen the sites and wants another side of the same sierra.

The history of the mine

Activity began around 1908, although the first documented mention of the working is from 1940: the Coto Minero Hongo, of 290 hectares, with four concessions. Brown haematite with 55% iron was extracted. The mine closed in 1973, when the cost of transport made it unviable. In 2007 the Junta Vecinal of Olmos began to restore part of the complex, which opened to the public in 2013.

What the visit is like

You enter by the mine mouth in the dark, with paraffin lanterns, among wagons, carbide lamps, timber props and blast holes; in one stretch you can pick at ore and move it along the rails. When you reach the end the light is switched on so you can see the whole gallery, and the guide takes you to the large distribution cavern, where the underground museum of minerals and rocks is. You come out by the old ventilation shaft, from a depth of 30 metres. Outside you walk round the open-cast workings, of many colours, and the ruins of the houses, offices, forge and stables of the mining settlement.

The basic visit, Exploradores del subsuelo (Underground Explorers), includes the outdoor tour, levels -1 and -2, a short talk on mining, the museum and a miner's wine. Since March 2026 it costs €10 for adults and €7 for ages 4 to 12; under-4s do not pay. Navegantes de la profundidad (Depth Navigators) adds a boat trip through flooded galleries, which the mine presents as the only one in Spain that can be visited by boat: €16 and €13, and children under 4 cannot get in the boats. For organised groups there are other options, such as El bosque mineral, at €6 per person, and workshops for schoolchildren.

Opening hours and booking

It is open Monday to Sunday with sessions at 10:00, 12:00 and 16:30, and the visit lasts an hour and a half. Booking is essential and a minimum of six people is needed for a session to go ahead. Book on its website, on 947 421 714 or at [email protected].

Inside it is between 10 and 14 ºC all year: bring a jumper or fleece and closed shoes, boots or trainers, because there are muddy puddles, especially in spring.

Getting there and what to combine

From Burgos take the N-I towards Vitoria and, after 12 km, the turn-off to Atapuerca by the BU-701. In Olmos, the meeting point is signposted as Mina Esperanza; when you book they send a map. Burgos is 19 km away and the sites, 9.

It fits in the same morning as the CAREX, five minutes away by car, or in the afternoon after the visit to the sites. To stay nearby, the Casa Rural Camino Blanco is in Ibeas de Juarros, and in the village of Atapuerca you have the information centre.