Raids of the author in extreme environments to lead an exploration or attend an exceptional event. Be able to be present as closer as possible to observe  an original nature. He can involve of observing a volcanic eruption or to lower at the bottom of a crater, or exploring a new cave or dive into a lake of glacier... the common denominator is always the absence of long-lasting life, at least as regards the human race, from where the term of raids which involves a relatively time-limited stay.

On the other hand, thèse extreme territories can welcome various forms of life among which the adaptations to the stress as heat, pressure, cold, acidity, send back to us  in the mists of time, there is a few million years. Live outstanding experiences, feel intense feelings and bring back testimonies with the aim of sharing with the largest number a vision of a world not so distant, ours.