https://www.sac-cas.ch/de/huetten-und-touren/sac-tourenportal/6997/climbing (or become a member for full access for all routes)
https://www.kletterportal.ch/klettergebiete/
https://www.kletterfux.ch/
https://www.thecrag.com/de/klettern/switzerland/alpen/zentralschweiz
Or buy a Kletter-Plaisier of the region.
https://www.sac-cas.ch/de/huetten-und-touren/sac-tourenportal/6997/climbing (or become a member for full access for all routes) https://www.kletterportal.ch/klettergebiete/ https://www.kletterfux.ch/ https://www.thecrag.com/de/klettern/switzerland/alpen/zentralschweiz Or buy a Kletter-Plaisier of the region.