Eleven layers deep, with caked earth and bent nails on its surface, this original Shea Stadium all-wood base foundation (without rubberized plate) has had its share of pounding, abuse, and history - just think of the luminaries who have stamped down upon this structure over the past forty plus years. Measures 20 x 19 ½ x 7 ½”. Also included are three (3) plate mounts - heavy concrete blocks (9x10x8”) each with a single metal-enforced square 2-inch deep space to secure base. Four items forty-four years deep in history.