Archaeology
Metaxia Tsipopoulou began excavations at Petras in 1985.
The main building, which was two stories when it stood, is 2800 square meters.
Petras has a drainage system, double staircases, dadoes, frescoes and cut slab pavements. Marks appear on the architecture of double axes, stars, branches, double triangles and Linear A signs. Petras has yielded only one Linear A tablet from its archives so far, but a hieroglyphic archive was excavated in 1995 and 1996.
The central building shares many of the features that are used to identify a Minoan palace apart from a regular building: pier and door partitions, alternating columns and pillars, and ashlar masonry.
Additions and building modifications were occurring as late as Late Minoan IB.
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