The official website for holidays in South Tyrol
Percorso Alta Fune: high rope climbing in the woods in Terlano, easy to reach from Bolzano with public bus for Merano.
Salewa for climbing indoor, in Bolzano.
For other opportunities, see the tourism information website concerning climbing in South Tyrol.
See the tourism information website concerning rafting and canyoning in South Tyrol.
Websites for planning hikes and other outdoor activities with interactive maps:
http://www.alpenvereinaktiv.com/en/tourplanner/
Here you can find already existing hiking routes:
https://www.sentres.com/en/south-tyrol