man made caving area project

[mattbase]

Hi I work for The Base in Horsford, Norwich. We have a come and try Extreme sports activity Centre. Looking for new ideas we thought it might be great to turn the area under our snow tubeing slope made from scaffold into a caving area. We allready have lots of bays made by the upright and horizontal poles, we were going to enclose these in and make a series of tunnels which initially would generally be about 1m high as we would like to also use the area for laser game to start with. Would welcome someone to come and give me some advice on materials to form tunnels/layout and training for staff thanks Matt