The number of vertebrate species on the earth has become extinct. More than 400 species have become extinct; under normal circumstances, it usually takes more than 10,000 years for 400 species to become extinct.

Recently, Parisian visual artist Julien Nonnon came to the Alps, using the mountain cliffs as a canvas and using the magic of light to create an equally shocking work "Crying Animals". "I hope that through the ephemeral nature of the light works, the public will know that the existence of these animals in natural spaces is indeed threatened. Maybe one day, they will disappear just like the lights go out." This is a paragraph in the introduction of Julien Nonnon's work . Wolves, lynxes, bears, red foxes, eagles, griffons, vultures...these giant animal heads appearing in the Alps are all species that are now on the verge of extinction.

The work is inspired by Paleolithic artists whose paintings the shapes of rock walls. Julien Nonnon wants to use this poetic method to call on more people to join the team of animal protection. He said that it is the responsibility of each of us to keep these beautiful creatures alive.