4. THE COAL SEAMS

Walk out of Aliaga towards La Aldehuela. Take the path on the left towards the Molar spring and continue further on for about another 100 metres.

We find an otcrop of sandstones and coal seams. The latter are black or dark grey beds which were mined in the Aliaga zone since 1940 until 1964. Carbonized plant remains can be eventually observed, which grew during the early Cretaceous in a marsh associated to an estuary, once the seashore had moved away from the Aliaga area.

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