History of the Cyclades have been found on Naxos. The operation of silver mines on Siphnos may also date to this period. At the end of the 19th century, the Greek archaeologist Christos Tsountas, having assembled various discoveries from numerous islands, suggested that the Cyclades were part of a cultural unit during the 3rd millennium BC: the Cycladic civilisation, dating back to the Bronze Age. It is famous for its marble idols, found as far as Portugal and the mouth of the Danube, which proves its dynamism. It is slightly older than the Minoan civilisation of Crete. The beginnings of the Minoan civilisation were
Minoan civilization Ancient Egypt). Evans' system divides the Minoan period into three major eras: early (EM), middle (MM) and late (LM). These eras are subdivided—for example, Early Minoan I, II and III (EMI, EMII, EMIII). Another dating system, proposed by Greek archaeologist Nicolas Platon, is based on the development of architectural complexes known as "palaces" at Knossos, Phaistos, Malia and Kato Zakros. Platon divides the Minoan period into pre-, proto-, neo- and post-palatial sub-periods. The relationship between the systems in the table includes approximate calendar dates from Warren and Hankey (1989). The Thera eruption occurred during a mature phase of the LM