Radwanderung. According the the translator I used, it’s German for “bicycle tour”. There has to be better words in German to describe this video though.
The older I get, the more steep drop-offs scare me. You can add this trail to the list of ones I’d never ride. I’m not sure I’d even walk it. I had to pause the video part way through to catch my breath!
Thanks to AHTBM for sharing the video!