This is an illustration for a short story entitled "Youpi, on va tous mourir" ("Yeepee, we're all gonna die") featured in "Fin(s) du monde", an anthology of stories depicting various visions of the end of the world.
The book is for sale here : http://www.lesartistesfous.com/les-editions-des-artistes-fous/fin-s-du-monde
The book is for sale here : http://www.lesartistesfous.com/les-editions-des-artistes-fous/fin-s-du-monde