The 24 hour supervision by security guards is insufficient for protecting the whole site. Video surveillance would solve the problem. 14 static cameras with infrared illumination for night time surveillance need to be placed on a number of locations, in the tourist pavillion, on both entrances and in between the working and living cabins. The cameras will be installed on the existing posts supporting the outdoor lamps. The security alarm system needs to be replaced with a new one with greater efficiency.