central heating and a fireplace. It is open all year round, but to overnight a military license is required. Christos Kakalos is at the southwest edge of Muses' Plateau (2,648 m). It belongs to Greek Federation of Mountaineering and Climbing (Ε.Ο.Ο.Α) that operates it from May to October and provides 18 beds, electricity, blankets, a kitchen and tank water. It is managed by one of the best experienced Greek climbers, the geologist Mihalis Stylas. Stavros ("Dimitrios Bountolas") is on the eastern side of Olympus, 9.5 km on asphalt road away from Litochoro, at elevation, in the Dionysios Monastery forest. It belongs to the Greek Mountaineering Club of Thessaloniki, operates all year round, mainly as refreshment room and restaurant and can host 30 persons. It is managed by the Doultsinou family. Giosos Apostolidis is on Muses' Plateau (Diaselo – 2,760 m) and belongs to the Club of Greek mountaineers of Thessaloniki. It can accommodate 80 persons, it provides electricity, water, a fireplace and an equipped kitchen and it is open from June to October. It is managed by Dimitris Zorbas. Petrostrouga is on the second, more common, path to Olympus (D10), the same path to reach to Muses' Plateau. This refuge is at elevation, surrounded by perennial Bosnian pines. It can accommodate 60 persons, it provides an equipped kitchen, electricity, water and a fireplace and it is open all year round. It is managed by the Hellenic Rescue Team. It provides organized medical equipment and one of the three emergency heliports in Olympus (the others at Skourta and Spilios Agapitos) and emergency wireless inside and out of the refuge. Emergency refuges Aghios Antonios emergency refuge on the summit Aghios Antonios (2,817 m) is equipped with emergency items by the Hellenic Rescue Team. In the refuge there is wireless for communication in case of emergency. Kalyva tou Christaki emergency refuge is in "Megali Gourna" (2,430 m) along the Path E4, Kokinopilos – Skala. The refuge does not provide emergency items (there are only beds) and is only for protection from bad weather. Kakalos emergency refuge at the "oropedio ton mouson" belongs to the Greek Mountaineering & Climbing Federation and is located at the eastern margin of the Plateau of Muses at an elevation of . It was named after Christos Kakalos the Olympus hunter and guide who together with the Swiss climbers Fred Boissonnas and Daniel Baud Bovy made the first recorded