This story is credited simply to Giraud, which means that it predates Moebius. It’s a beautifully drawn little fantasy story, but the part that always interested me was the idea of an entire citadel carved out of a massive block of stone. The top image on this page gives the audience the only really good view of the citadel and Giraud opens up and gives the image room to breathe.

(Heavy Metal issue #44, November 1980 – Page 11 Blind Citadel by Giraud)