I think the islands named by Bizer are correct, but I would have to say that I think the photo was taken from a closer vantage point than Belknap Mountain, and possibly a slightly different angle. I would guess that the photographer was atop Locke's Hill or at the farthest, the hill that forms the east side of Gunstock Acres, which is in line with, but higher than, Locke's Hill.
I assume that Locke's Hill is the mini mountain that Zee was referring to.
Having said that, I am hardly a map maker
, and I could well be wrong.
It's a great picture though.
Rob