Samples of SAFE Geotechnology’s Rockfall barriers undergo real life crash tests to verify their resistance. The general reaction of the barrier is observed following the impact with an “artificial” rock which is launched down a slope thus simulating real conditions found in nature. Thanks to these types of experiment it is possible to establish the maximum deformity undergone by the structure during impact and the forces acting on the foundations thanks to load cells placed in specific locations in the ground. A brief description of a launch: 1*   The block of stone hooked to a pulley is released to slide freely towards the bottom of the slope thus giving a controlled simulation of the probable trajectory that a rock would take in nature. The block of stone hooked to a pulley is released to slide freely towards the bottom of the slope thus giving a controlled simulation of the probable trajectory that a rock would take in nature. 2*   At a specific point, the block is released from the pulley and falls freely towards the intercepting surface (net) of the barrier. 3*   The exact speed of the block is measured in the last few moments preceding the impact using a camera. 4*   The block hits the centre of a barrier erected specifically to conduct this kind of experiment……… 5*   The net changes shape and begins to transmit the forces it receives to the cables which form part of the barrier. In this way the energy is dissipated gradually and the deformation of the structure is controlled so as to …… 6*   …..stop the block and leave the retaining structure deformed.