Spanning high in the darkness of vast caverns, sturdy natural bridges (and precarious rope and plank bridges) arch across stretches of open air, reachable by clambering up sturdy, but precarious pillars. WHATS INCLUDED: (4) Archway, (2) 1` Riser Pillar, (2) 2` Riser Pillar, (2) 3` Riser Pillar, (4) 1` Bridge – End (Wedge), (4) 1` Bridge – End (Posts), (6) 1` Bridge – Slat Grid, (6) 1` Bridge – Slat No Grid, (1) 1` Bridge – Slat Broken. Contents subject to change. Images not final. Patent pending.