In the late days of spring snow still may fall in the higher ranges of the Pyrenees. The range shows nonetheless a harsher past with U-shaped glacier valleys and round ground granite bedrocks where now shy flowers root among their tiny crevasses. We pass by dozens of lakes and smooth grassy patches too. Subtle and almost graceful granite dams show the presence of humans and their early attempts to harvest the power of water at the beginning of the 20th century. They contrast with the less ambiguous concrete wall at the lower valley.