Blue Hole (manga)

Blue Hole (ブルー　ホール) is a science fiction manga series by Yukinobu Hoshino involving dinosaurs living in the present. Its title in France is Le Trou Bleu. It was serialized in Mister Magazine from 1991 to 1992 with two tankōbon published.

Le Trou Bleu ブルーホール (漫画)