Thanks! It took 11 hours from the top of Briezner Rothorn to the flat of Interlaken. Done some pretty tough hikes but this one was easily in the top 3 for exhaustion. Yeah would not recommend in poor weather :/
Hi there, thank you. I did this end of June/start of July. The spring/summer months are best, wouldn't want to be up there in rain/snow. However, you are exposed to the Sun for the whole ~10 hours so take plenty (more than you think is plenty) of water and have sun cream etc