The Topolia Gorge is located in western Crete and along the road leads to the Elafonisi area. Its main hiking trail forms a small part of the actual length of the gorge and essentially begins near the village of Katsomatados, at an altitude of about 250m, and stops at the stone-built Marathokamara below the village of Topolia, at an altitude of 150m. In this narrower and more impressive part of the canyon the rocks are vertical and tall. Crossing the gorge is the river Tiflos, which flows from Mount Dikaeos to Elos and carries its waters into the gulf of Kissamos.
Near the beginning of the trail it is worth visiting the cave of Agia Sophia, located above the main road.