I have read numerous descriptions, but seen few pictures, of the terrible conditions in the camps. This article contains a few pictures, and they are worse than I had imagined based on the descriptions. Apparently these photos were taken by Homeland Security inspectors, and it isn't clear if they were released or leaked.
https://www.nbcnews.com/politics/immigration/help-photos-show-hundreds-migrants-squashed-cells-appealing-assistance-n1025831
WASHINGTON — Government investigators have identified poor conditions in another sector of the southern border, publishing graphic photos showing extreme overcrowding in Rio Grande Valley migrant facilities and finding that children there did not have access to showers and had to sleep on concrete floors.
Investigators for the Department of Homeland Security who visited border stations in the El Paso, Texas, sector in May found similar conditions: migrants being held in temporary facilities for weeks rather than days, single adults living in standing room-only cells with no space to lie down, and concerns about serious health risks.
More at link above.