The Improu Gorge is a small but lovely gorge in the area of Sfakia. It is accessible in all seasons and annually receives over 50,000 visitors. The trek to cross it begins in the mountain village of Imbros (altitude 780 meters) some 55 km from the city of Chania. The gorge has a length of 8 km and the crossing takes – depending on your pace – about two hours. It has some imposing passages which are created by the vertical rocks. Near the midpoint of the crossing these rocks block the view of the sky, much like a tunnel. The narrowest point is a mere two meters. The gorge ends at the road that runs between the village of Sfakia, 4.8 km to the west, with the well-known fortress and beach of Fragkokastello, 10 km to the east.