The Schwarzbachfall is one of the nicer waterfalls in the Gasteretal near Kandersteg in the region Berner Oberland, Switzerland.
The Gasteretal is only accessible through a tunnel with an entrance fee. The road is very narrow that cars only can go oneway through the tunnel. Every 20 minutes you can go through. I read that you have to book a ticket in advance, but the valley is very beautiful as far I can remember. We were visiting the Kandersteg region in May 2005 so it is a long time ago.
Once through the tunnel there are several nice (unnamed) waterfalls you can admire from a distance. The Schwarzbachfall is the first waterfall and is located at the right side of restaurant/hotel Waldhaus. Just a hundred meter after the hotel there is a hiking path going to the right. From here it is a 30 minute walk to the Schwarzbachfall. Although it not a very tall waterfall (22 meter) it is a nice waterfall to visit.
As said there are many other waterfalls in the Gasteretal, about five of them are worthwhile to mention. Best is to explore them yourself,
Besides the many waterfalls in the Kandersteg and Kiental region there is also my absolute favorite waterfall that lies in the neighbor valley near Adelboden, the Engstligenfall with a total height of 415 meter.
If you want to see more great waterfall you can drive further to Lenk. There are several other great waterfalls near Lenk but the most famous one is the Simmenfälle. From here you can walk to several other great waterfalls but Siebenbrunnen is a another gorgeous karstic waterfall.