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Alluvia - There is great variety of sediments in this area arising from sequential
inundations as well as submarine activity. The large plain from Retamar through Campohermoso
has several layers resulting from an enormous inland lake that also laid the areas
of gypsum in Murcía as well as sandstones. There are large areas of outwash from
Nevada. Where the plain has been cut by ramblas the layers are fully revealed near
Retamar. There are also volcanic outflows and areas of washout from local rainfall
off the hills.
NORIA was the name given to a mechanical waterwheel operated by donkey or mule drawing water from a large well. They are numerous in Níjar district but that at Pozo is the best preserved. They are generally situated in RAMBLAS. Between Carboneras and Mojacar is a village known as Las Norias.
Parque Nacional & Parque Natural
There are 2 main Spanish classifications of natural areas of special conservation concern, PARQUE NACIONAL and PARQUE NATURAL. This is hierarchical and the difference in level of protection is considerable. A Parque Natural enjoys minimal legislative control. See Conservation.