The Brenner Base Tunnel - a new link through the Alps

BRENNER BRENNERO 1.371 m FORTEZZA 749 m BRENNER BASE TUNNEL INNSBRUCK 575 m WOLF STEINACH AM BRENNER SCHÖNBERG IM STUBAITAL COLLE ISARCO GRIES AM BRENNER Austria Italy AICA BRESSANONE MULES VIPITENO 19 The geodetic frame network is a network made up of measurement points (highlighted in yellow), which are distributed over a wide area and, in conjunction with the GPS system, form the basis for the measurement of the Brenner Base Tunnel.