Two of Greece’s main ski centers, in Parnassos and Vora–Kaimaktsalan, are now open and operating, the managing Public Properties Company (ETAD) said on Thursday. The country’s largest and most popular, the Parnassos Center has been refurbished offering 23 ski runs 34km in total, a renovated chalet and eating areas.  The Vora–Kaimaktsalan Center offers skiing on