The gorge is simply magnificent.
If it has rained enough, I recommend going to the end. The waterfalls are just beautiful. But sure-footedness is an advantage.
Lake Kaltern contains the largest preserved wetland area between the Po Valley and the main Alpine ridge, which was also included in the European network of "Natura 2002" protected areas. …
In the visitor center and GEO Museum Bletterbachschlucht you can learn about 40 million years of geological history. Entry is also paid here and you get a protective helmet against falling rocks.