Watch as Blake Williams explains and demonstrates the Plank Tunnel team building challenge. The group starts in a low plank position which creates a tunnel. The end person will crawl through the tunnel as the rest of the group must do a high plank to create enough space. As the crawler passes each individual, they go back to a low plank. When the first crawler reaches the end, the next person starts through the tunnel. The challenge is completed when everyone goes through the tunnel.
