Yesterday we tried or first prototype of the experimental cages for the Human Exclusion Experiment in Asturias. It was difficult, not only because it was the first time, but also because it was very very difficult to find the right spot, with a flat surface and at least 30% of stalked barnacles cover. Finally we made it, and it looked rock solid!! However, we have identified some very important improvements which need to be made before ordering all the cages. Unfortunatelly, one of the persons with us fell down on a rock and got hurt. We had to leave urgently to see the doctor. This reminded us that this is a harsh environment, where we must allways remain alert and wear helmet.