The image does a great job hinting at the fraught relation between fishermen and powerplant. The image could be contrasted with other shots at daylight, or with activities at the plant, to start including more perspectives.
Maybe a way to connect it more clearly to the geographical site of your ethnography.
As elaborated earlier, I would like to hear more about the process of the author's creation and their personal relationship to the material.
I would implore you to include feminist and queer perspectives and artwork for a broader understanding of how (hyper)masculinity is constructed, challenged, and negotiated in Urban Guatemala. A visualization of the bus routes could further enrich your ethnography too.
Perhaps historicization. a time-based mapping (overlays) of demographic change and the emergence (and remediation) of toxic sites determined by each decennial census since 1990 (1990, 2000, 2010, 2020? - forthcoming). Also, an added layer of land-use zoning adjustments, official comprehensive planning documents, remediation policies, variances granted by local planning authorities and litigation gathered from court cases.
The landscape of petrochemical industries in the backdrop of blue spaces is faded, it almost escapes the sight of the viewer. It would help for the ethnographer to provide an edited version of the image with increased sharpness and curves to highlight industrial backdrop.
The image is a little opaque in my view, so the sculpture is hard to make out as well as the map. To extend the ethnographic import of the image, maybe the two sources could be combined in a different way, not only in an overlap? Or maybe there is a way to make both easier to make see.
In the caption there is mention of political borders marked in red within the image, but I do not seem able to see this - only a purple makring of what I presume is the outline of Delhi. Are they the dark-grey rectangles? If so, maybe adjust either the image or the caption to avoid confusion.
I don'y have any suggestions to enrich the image, I think it communicates a lot as it is. If the presence of the figures taking the photographs was to be highlighted, perhaps the contrast could be increased. But that could take away from the focus of the photo and the caption, which is on the river, toxicity and the algae.