The Richtis Gorge is a very green gorge located in Lassithi Prefecture, on the north side, between Agios Nikolaos and Sitia. It starts just outside the village Exo Mouliana and ends at the Richtis beach, east of the village of Kalabro. The walk starts at the stone-arched bridge of Lachanas (19th century). You walk along the river which you have to cross sometimes and even in the summer there is water in this gorge. The route is 4 kilometres long and takes about 3 hours to cross. Highlight of the walk is the beautiful waterfall of over 15 meters and an impressive watermill.