That part of Brittany(**) is called the “Emerald Coast”. Go figure 
Author not much involved, just be there, press shutter twice, and let Hugin(*) do the job (which required a couple of clicks).
(*) I tried Hugin several years ago when it was still fairly “roots”. How much progress since.
(**) You could see the Mont-Saint-Michel in the picture (15 miles away…) but it’s hidden by the summit of the islet.
Wow, one heck of a view there! Looks like a nice clean stitch as well.
I also suspect that there is more than a little credit due to the photographer. 
Well, Hugin even congratulated mefor the fit between the two pictures. But even hand-held that was easy, the horizon isn’t smack in the middle by luck, I aligned it in the viewfinder.
“The single most important component of a camera is the twelve inches behind it!” - Ansel Adams
well now it is more like 4 to 6 depending how big your head it. Good work
