I'd call this rule of thirds rather than centered comp, due to where the horizon and rock are. Now I see you used both in your title. I think that is en excellent way of pointing out that several compositional concepts can coexist in the same scene.
I'm curious...how are you getting Centered composition and rule of thirds? Those two techniques are opposites. You either have your subject centered or on a third. You actually managed to get a third and not centered.
Still a quality photo and I'm bumping it up a point.