The Minoan settlement of Petras was built on a low hill overlooking the present city of Sitia. It is believed by many researchers that this was the site of ancient Etea or Etida, from where the sage Myson came from. The town was excavated since 1985 by the archaeologist M. Tsipopoulou. Archaeologists founds parts of the Cyclopean wall with three square towers, two houses and a Minoan palace.
Petras flourished since the 20th century BC and quickly developed into an urban settlement with foremost commercial significance, as evidenced by the hieroglyph file found in excellent condition. After the destruction of the palace in 1450 BC, the hill remained inhabited and the defensive cyclopean wall was built. 40 large jars (pithi) were also found here, such as those found in all the Minoan palaces of Crete.