tunnel of love

An old mill is a type of amusement park ride where unaccompanied boats float on guideways and traverse through dark tunnels. These themed dark rides originated in the late 19th century and are known by a variety of names, including tunnel of love and river cave. While generally considered a gentle ride, a variation of an old mill featuring a climactic splashdown ending, similar to the modern-day log flume, is known as a mill chute.