Over the course of many years a river can cut deeply into stone creating deep gourges like with the Grand Canyonm. In the Alps the reasonably soft stone is ideal for such gorges, with the partnachklamm being one of the most spectacular examples. 

The gorge is easy to explore along a path that runs parallel to the raging river below. As you walk in and out of the tunnels and around the many bends, the ever-changing landscape inside will astonish you. It’s cold inside the gorge, even on hot summer days, so bring a light windbreaker or sweater. The path is easy enough to walk but narrow and low at times. During winter, ice will form marvelous landscapes.