A unique aspect of the Top O' Hill Terrace was the tunnel. To the west of the casino a small room led to a set of double doors which hid a 50' long, 4' wide, 10' high underground concrete tunnel that opened to the densely wooded country side. During a raid, the patrons could quickly exit the casino and make their way along well-groomed walkways to the tea garden or simply hide in the underbrush. Once in the tea garden, they could be found by law enforcement officers casually visiting and sipping some harmless beverage. While the patrons were making their exit, the employees busied themselves with converting the casino into a dining room.