Climate change is an issue that concerns all territories and particularly the Alpine territories. They are the very proof of a catastrophe that is in the making. The Ecrins National Park, located in France in the Hautes Alpes region, is suffering the consequences. We will apply the MOFF matrix, that is to say analyze the opportunities, threats, strengths and weaknesses found in this territory in the case of climate change. How does this territory adapt and suffer the consequences of this change? This book was produced using academic and theoretical tools, as well as field analyses and interviews with economic actors present in the Park's territory.