I have been looking a bit more at the Domes de Fabedougou.
They are certainly scenic, unusual and interesting. If one was nearby one would definitely want to see them.
The question is whether they have OUV.
IUCN is notorious for ONLY wanting to inscribe sites on Geological criteria if the Geology is particularly important, "unique" etc.
e.g Israel's Makhteshim "Craters" were failed for not being really unique ("A specialized example of an "Anticlinal erosion summit valley" which are apparently fairly common!)
France had to use all its persistence and political clout to get the Chaine des Puys inscribed and is trying to do the same with the Aples Maritimes. Both were/are regarded by IUCN as not being that "special". Not many countries can do this and we know it is totally unfair to those that can't!
I have looked for any Geological academic papers on the site - without success. Of course Developing countries lose out on that matter as well. If the Geology isn't important for minerals/oil etc then it is less likely to be studied.
I did find this blog from someone who is clearly "in" to Geology and made a special visit - https://earthly-musings.blogspot.com/2014/01/the-domes-of-fabedougou.html
He confirms what the UNESCO T List entry states "They are composed of Mesoproterzoic sandstone that is incredibly un-metamorphosed. For being 1,800 million years old (and coincidentally the same age as the much tortured Vishnu Schist in Grand Canyon) these rocks are surprisingly young looking.
I then looked up Purnululu which includes the Bungle Bungle range which, at first sight looks very similar to Fabedougou - it is also eroded sandstone domes but much, much "younger" - "The distinctive beehive-shaped towers are made up of sandstones and conglomerates (rocks composed mainly of pebbles and boulders and cemented together by finer material).These sedimentary formations were deposited into the Red Basin 375 to 350 million years ago, when active faults were altering the landscape. The combined effects of wind from the Tanami Desert and rainfall over millions of years shaped the domes.
The UNESCO justification for inscription of Punululu includes this statement - "It includes the Bungle Bungle Range, a spectacularly incised landscape of sculptured rocks which contains superlative examples of beehive-shaped karst sandstone rising 250 metres above the surrounding semi-arid savannah grasslands. Unique depositional processes and weathering have given these towers their spectacular black and orange banded appearance, formed by biological processes of cyanobacteria (single cell photosynthetic organisms) which serve to stabilise and protect the ancient sandstone formations. These outstanding examples of cone karst that have eroded over a period of 20 million years are of great beauty and exceptional geological interest.
So - how does Fabedougou compare? PurnuluIu got both Crit vii and viii but in many respects it seems pretty comparable with Fabedougou. I guess that, at the end of the day, it depends on who tells the story and how!!!!! As a non expert it would seem to me that Fabedougou "stands up" pretty well?