Here the people are sitting in these arcs where it looks like its frames inside a frame
FRAMES Frames for photographs come in all shapes and sizes and can include shooting through overhanging branches, shooting through windows, using tunnels, arches or doorways – you can even use people (for example shooting over shoulders or between heads) etc. Your frame doesn’t need to go completely around the edges of your image – they might just be on one or two edges of your shot. Rule of thumb when considering framing is to ask the question – ‘will this add to or take away from the image?’ Sometimes framing can just add clutter to a shot and make it feel cramped – but at other times it can be the difference between an ordinary shot and a stunning one.