It looks like a rocked pointed to the sky, this is a powerful image. The sky and the B&W treatment add drama. The comparison with the previous "saguaro" shot is interesting and it shows how vision can give a completely interpretation of a basically similar subject.
Well done Alain, I like it a lot.
... Getting out of my comfort zone in regards to black and white would be creating a series of quiet black and white images.
After all its neither about the subject nor about the photographer or his vision but some sort of not so clearly defined interaction. ... I feel constantly pulled between "abusing" the subject to fullfill some sort of vision (I'd call this the omnipotence state) and a sort of horror about what I am actually doing to the subject (the humble state - not necessarily better than the other state).
"Photographs succeed not when a photographer has an original vision, but when viewers can re-create that vision or another equally powerful one in their own minds upon seeing the photograph. If the vision overwhelms the substance, we say the work is self-conscious. If the substance overwhelms the vision, we call the result banal or unimaginative. It is one thing for an individual image to succeed or fail on the basis of personal vision. It is quite another to create the continuity of personal vision needed to carry off the theme of an entire book."
p274 Photo Book Nuances, in "Galen Rowell's Vision: The Art of Adventure Photography" 1993