The area surrounding the mines Blanca and Las Matildes has been restored, and a guided visit is available, together with several cultural and enviromental routes through the Sierra Minera of Cartagena and La Unión.

It is open from Tuesday to Sunday, from 10am to 2pm. Only groups of 15 or more can arrange visits from 4pm to 8pm, calling (+34) 968 54 03 44 or the mobile (+34) 628 073 482.

You can read some more about this project here. From their website:

The Sierra Minera Foundation is responsible for the project and counts on the support of three Ministries of the Autonomous Community of the Murcia Region – in particular the ministries of Environment, Culture and Tourism -, the Cartagena Town Hall and the CajaMurcia Foundation, which take part in the Project as cofinancing partners.

In an area such as Sierra Minera, located in Cartagena-La Unión, damaged by mining, the project aims at fostering sustainable tourism which will contribute to overcoming the environmental deficit of the area and which will offer an alternative to the prevailing model of mass tourism.

Being a pioneer project in our Sierra, it binds a first experience of recovery of the facilities of two mines which have great hereditary interest, together with the environmental restoration of areas damaged by mining, and the starting of ecocultural tourism alternatives, trying to find a strategy of sustainable development of the area.

The goal is to settle the bases for local rational developmet, which will not compromise its resources and which can count on the participation of its local people, fostering a tourist activity which can minimize environmental costs through the sustainable use of its own nature and the cultural inheritance it possesses.