Beautiful, narrow street along the Strubklamm - a canyon-like valley between Hintersee and Wiestal. Caution should be exercised through the tunnel, as some drivers do not expect cyclists.
For die-hard cyclists, the road is a highlight in winter, too.
The up to 100m deep Strubklamm is in summer as in winter an impressive natural spectacle. A hiking trail does not lead through, from the wheel you can watch wonderful as the Almbach squeezes through huge rock formations.