The section of this shaft is approximately 20 centimetres by 20, and this is by what the Upuhaut robot'sprogression was stopped aftera course of approximately 60 meters.

German engineer R.Gantenbrink specifies that the door does not carry any trace of mortar and it was assembled with a high degree of accuracy what lets suppose to him that it would be mobile in one way or another.

He also made study the corroded bronze parts which would have been cold inserted then folded up by hammering what can let think that is the back of a handle.(Anyway a man or a child cannot be held on the spot from where upuhaut took the photograph, the section is 20 centimetres by 20).

He points out the perfect level of completion of the internal walls of the shafts, which is not the case for its other parts.

He finally raises the question to know if a hollow volume would not exist other side of the door and proposes to check it by the possible measurement of gas injection volume by the lower right corner of the door which is chamfered.

In September 2002 a new Robot was sent with live retransmission on televisions channels; Click here.

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