Portugal's secretive communes in Algrave could unlock the mystery behind Madeleine McCann vanishing.
Hippies once flocked to the area in the 1960s and the area continued to become a haven for drop-outs and off-griddeers, with drugs and crime prevelant.
Now it has been revealed that investigators discovered a “relevant clue” to the case of the missing girl during their search of a reservoir in the area, reports the Daily Mirror.