Chalcidice(redirected from Chalcidian)
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(also Khalkidhiki), a peninsula in northeastern Greece, between the Gulf of Salonika and the Gulf of Strimon of the Aegean Sea. The peninsula, which juts 120 km into the sea, forms three prongs: the Kassandra, Sithonia, and Ayion Oros peninsulas. The terrain is mountainous; the maximum elevation is 2,033 m, at Mount Athos on the Ayion Oros Peninsula. The Chalcidice Peninsula has Mediterranean shrubs and mountain forests. The city of Thessaloniki lies on the northwestern edge of the peninsula. On the slopes of Mount Athos stand about 20 monasteries.