Dahm my man, this exudes a feeling of the forbidden. The texture's on the rocks are fantastic at creating a sense of shape. I'm going to use this as a reference later
I'm a big fan of Moebius and especially his comics from the -80/-90 and they have those crazily good stone reliefs (and more relief stuff), it's really worth to check out IMO, I've been inspired by and practicing from them a lot :-)