Summit Sunrise, Mike Lathrop

 Puzzle Lab, 200 pieces. Very difficult because lots of the pieces fit, or seemed to, in different places and there wasn't always a ton of guidance from the image, though there was enough for me to do the puzzle with confidence (albeit the last piece I placed required moving a piece on the edge from where I'd had it and shifting it to the interior; once I'd done that, the superiority of the placement was clear). 3/5