The scienfic discussion of this meeting with (from right to left)
Des Higham, Myriam, and Ernst Hairer
(level: 1863 meters) was about the problem how four people are best
placed on one bycicle for driving down a steep slope of 1000 meters.
And here we admire, how the above picture was produced: with an ingeniuos
construction of 326 well selected stones and one Leica camera ... in
perfect harmony with the gradient of
gravitation.