The Petralona cave (Greek: Σπήλαιο Πετραλώνων) also Cave of the Red Stones (Greek: Σπήλαιο των κόκκινες πέτρες), a Karst formation - is located at 300 m (984 ft) above sea-level on the western foot of Mount Katsika, 1 km (1 mi) east of the eponymous village, about 35 km (22 mi) south-east of Thessaloniki city on the Chalkidiki peninsula, Greece.