Circular hike in the forests of Mount Vermio from the Agios Nikolaos grove of Naoussa to the picturesque Ypapanti chapel at 1,100 m, past the Taxiarches chapel and Profitis Ilias, through chestnut, beech, oak and black pine, with views over Naoussa and the slopes of Vermio; back on different paths. 10 km, +/-710 m (480 to 1,100 m), 4-5 hours, difficulty 2/5, good fitness; ages 14+ with a guardian. Free time at the Agios Nikolaos grove afterwards. Coach leaves 07:30 from Kaftanzoglio Stadium and 07:50 from One Salonica (lower parking, Stathmou St traffic light), short stop at the Platanos service area, hike 10:10-15:00, departure 17:00, back at One Salonica 18:30 and Kaftanzoglio 18:45; own-car participants meet at 09:50 just before the entrance of the Agios Nikolaos grove. €25 by coach, €15 with your own car. Led by mountain guides (TEFAA graduates) with international first-aid certification; first-aid kit, radios, photos and video, VAT included. Free cancellation with full refund up to 48 hours before departure; full refund if the trip is cancelled or postponed for weather. Book on discovery-trail.gr; payment by IRIS or bank transfer. Contact: +30 698 697 4647 (Leonidas), +30 694 518 0393 (Dimitris), discoverytrailinfo@gmail.com.