Gruta de las Maravillas
Encyclopedia
The Gruta de las Maravillas (English: "Grotto of the Marvels") is a grotto in Aracena
Aracena
Aracena is a town and municipality located in the province of Huelva, south-western Spain. , the city has a population of 7,612 inhabitants.-Main sights:...

, Andalusia
Andalusia
Andalusia is the most populous and the second largest in area of the autonomous communities of Spain. The Andalusian autonomous community is officially recognised as a nationality of Spain. The territory is divided into eight provinces: Huelva, Seville, Cádiz, Córdoba, Málaga, Jaén, Granada and...

, Spain
Spain
Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

.

Opened to the public in 1913, it includes a total of 2130 meters of subterraneans.
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