A partial view of the site where archaeologists are excavating an ancient mound in Amphipolis, northern Greece, Tuesday, Aug. 12, 2014. Greece’s prime minister Antonis Samaras who visited the site Tuesday said that archaeologists excavating an ancient mound in northern Greece have uncovered what appears to be the entrance to an important tomb from about the end of the reign of ancient warrior-king Alexander the Great. (AP Photo/Alexandros Michailidis)