The tow tongue is a truss-frame structure that provides the lower hitch attachment as for towing behind an ATV or like.  With the Tow Tongue and Winch and Line, the Fetching Arch becomes a similar geometry to the ATV Forwarding Arch and is used in the horizontal configuration in like situations.  The TT&W option allows the carrying of multiple smaller logs with the choker line and being pulled behind a vehicle of any kind.