This book is a reference for those interested in the Hautes-Alpes, it is an activist act, full of true passion for our department. Born from the meeting of archaeologists Marie-Pierre Estienne and Nathalie Nicolas, and Gérald Lucas, the most famous high-Alpine photographer, it forces the (re)discovery of unknown or known sites, wild settings full of the spirit of the Middle Age, sumptuous decorations for a rare and precious medieval heritage. Scholarly book, art book, field book, this work, which will fascinate the medievalist as much as the cultural hiker, is an invitation to respect and memory.