'The crown jewel of all trail-rail adventures'

Tunnel 20 is an ominous, dark hole that swallows up bikers for 1.8 miles and is called the Taft Tunnel. It’s one of eight tunnels that stretch along the 15-mile Route of the Hiawatha bike trail. The sound of bikers echo off the cement walls that drip with water, and the air is cold and damp. There is a crown in the center of the tunnel, and ditches along the sides needed to drain water that runs at 3,000 gallons per minute.