Following the path on the north bank of the Voidomatis River, which starts either from the bridge between the villages of Papigo – Aristi or from the bridge of Kleidonia and covers a distance of about 4 km (2.5 hours on foot), the visitor has the rare opportunity, apart from enjoying and admiring the stunning and beautiful landscape, to engage in a unique, mental journey to the past, to the depths of prehistory, to the time of the last ice age. Points of interest: Voidomatis river and the homonymous gorge, the springs that gush out along the route, at the level of the riverbed, at points where they are linked to the action of faults and the lithological variations of the limestone, the rock shelters at "Kleidi" and "Boila" sites, but also human elaborate constructions such as the Church of Panagia Spiliotissa Aristi, the chapel of Agioi Anargyroi and the stone bridge of Voidomatis in Kleidonia, built in 1665, 1658 and 1853 respectively.