The humans visual understanding of an event is fasten to a discernible physical base point. Consequently, an event which take place on the ground is more often likely to be memorable seems there are landmarks which identify the situation. The sky, as a uni-form, uni-color background with no stable base point does not provide such an understanding about the situation at which air disasters take place. In order to make a aviation accident memorable there should be a void from the ground to the sky which provides visitors with a border which distinguishes the place at which it has taken place from its periphery .
Lenght : 80 m