 Located in Amity valley is the western outlet of the Heroes Tunnel, a twin tunnel which carries the Wilbur Cross Parkway through approximately of solid traprock beneath West Rock Ridge.It is the only tunnel on a limited-access highway in the state of Connecticut.The southbound roadway on the Wilbur Cross Parkway ascends sharply when exiting from the Heroes Tunnel, climbing over in less than , the steepest inclination on any limited-access highway in the State of Connecticut.