La Unión's Mining Park: an exterior route through the Sierra Minera

La Unión's mining story is written across an entire coloured sierra, not only underground. The Mining Park brings together nineteenth-century workings on the road toward Portmán: a roasting furnace, powder magazines, mineral vein, washing plant, sludge pond and the entrances of Pablo y Virginia and Agrupa Vicenta.

Why it matters

Silver-lead, iron, zinc and tin extraction reshaped the Sierra de Cartagena-La Unión and drew a dense workforce into hard, dangerous labour. The Camino del 33 carried people and material across the range. Agrupa Vicenta, opened in 1869, later became famous for vast chambers, ochre water and flamenco performances, but its interior is currently closed; the public story must therefore begin with the exterior industrial landscape.

Plan the visit

The council currently describes the park as free exterior access on foot, with no vehicle entry or reservation for the open-air circuit. That makes the surviving structures and scarred geology the visit, not a consolation prize. Heat, uneven ground and unprotected industrial remains demand proper footwear and attention. Never pass a mine gate or barrier.

• Confirm the current closure status before travelling for an underground visit.
• Carry water and avoid the exposed route at summer midday.
• Stay on the interpreted exterior circuit and keep away from shafts and unstable structures.
• Do not collect minerals or enter workings, however open they appear.

Connect the story

Return to the La Unión guide for the town, market hall and cante minero, or continue the landscape story toward Portmán from authorised public routes.

Sources

Written in September 2026 from La Unión council's current Mining Park access notice and heritage description.

Agrupa Vicenta is closed at the time of writing. Conditions may change, so use the council notice, not old ticket pages, as the source for live access.