Two-day winter trip by coach from Thessaloniki, one night at the Milionis Forest Hotel (2 km outside Grevena, breakfast included). Day 1: the Aziz Aga bridge at Trikomo (1727), then a traverse of the Portitsa gorge from the Trikomo–Monachiti bridge past the two-arched Portitsa bridge (c. 1743) to the village of Spilaio (5 km, +470 m, 3 hours, grade 2/5, good fitness), lunch at a tavern in Spilaio. Day 2: from the Vasilitsa ski centre along the lifts to Vasilitsa peak (2,249 m), with views of Smolikas, Grammos and Tymfi (6.2 km out and back, +490 m, 4 hours, grade 2+/5, very good fitness and experience needed; the route may change if crampons or snowshoes are required); those not climbing stay at the ski centre. Back in Thessaloniki around 20:30-21:00. Included: private coach, certified Green Oliver guides, professional liability insurance, climate resilience fee. Not included: meals, drinks and personal expenses. Ages 14+; under 18 with a parent or guardian. Mandatory: hiking boots, waterproof jacket and gaiters for Vasilitsa; warm winter layers. Deposit €50 within 4 working days of confirmation, refundable or transferable until 30/11/2026; balance due by 17/12/2026, non-refundable after that. The programme may change with the weather. Book via the form on the trip page, info@greenoliver.gr or 2310 283534 / 6977 212892 (weekdays 10:00-18:00); places are given in order of booking until full.