Entrambasaguas - Municipality in Cantabria, Spain

"Entrambasaguas is a small municipality located in the autonomous community of Cantabria, Spain, 25 km south of the Bay of Santander. It is moderately mountainous, and the origin of the Aguanaz River, which once drove 23 watermills and merges with the Miera River. Limestone caves with Paleolithic rock art and burial sites from the Bronze Age exist. Iron was mined here from prehistoric times, used in the Royal Artillery Factory of La Cavada, which supplied the Armada, and eventually brought some wealth during the Renaissance. First mentioned in 1210, this rural area of Green Spain consists of six towns an area of 43.2 square km, totaling about 5,000 inhabitants as of 2015, having nearly doubled since 2005. - Wikipedia"