EXTREMELY sensitive area in regard to airspaces (LOWI - Airport Innsbruck)!!
Access
from Innsbruck center: take 'Hungerburgbahn', then 'Nordkettenbahn'
Rules
CTR!!
A very good description of Tirolean airspace for PG and HG structure with graphics:
https://venetflieger.at/php/luftraumstruktur_tirol__neue_regelung,13883,37376.html