The ditch at Horta do Pinheiro 6 has been dated by radiocarbono from Late Neolithic. There are now 15 ditched sites with occupations dat...

  Image of the excavated section of the ditch (photo by Tiago Nunes) …walled enclosure dated from the Chalcolithic a new ditched sit...

… found in the context of Alqueva water supply network. Here you can see how difficult it can be, sometimes, to detect a negative struc...