Haven't much information on this photo, but it is from Vulgare, a most interesting landscape blog from France.
Clearly this scaffold has something to do with cliff stabilisation: two weak systems pressed against each other to hold everything in place. The tires at the bottom of the unscaffolded part are another such solution: gabions holding back the base. And the shade arbour in the foreground, another fragile structure that in certain circumstances could be life-saving. This is an unpeopled photograph of a scene dense with human need and activity.