… found in the context of Alqueva water supply
network. Here you can see how difficult it can be, sometimes, to detect a
negative structure of this type: a darker spot, with some charcoals, a fragment
of a Pecten maximus shell, corresponds
to the filling of a ditch crossed by the trench open to receive the water tube.
It is, again, located in the Sado basin, in a
peripheral zone to the concentration of ditched enclosures in Alentejo. They
are slowly appearing in more western areas in the region. I have to update the
enclosures map.
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