At the Senhora da Alegria, two small ditches define a
gate. They probably date from middle Neolithic and document one of the earlier
contexts with ditches in Portuguese Prehistory. Not the earliest, because in
the previous occupation of Early Neolithic of the same site another small ditch
But if they are not the earliest at least have the most
strange and interesting gate structure ever.
The structure in front the gate of one of the ditch structures of Senhora da Alegria.