Contract section H3-6 (Wiesing / Jenbach Ost, known as the "Tiergarten tunnel") was for an approx. 671 m long section of tunnel forming part of the Munich-Verona rail transit corridor in Tyrol's Lower Inn Valley. This tunnel links the two contract sections H8 and H3-4. To improve site access and for subsequent use as an escape route, an approx. 160 m long drive-through access tunnel was built here.