...and
one another "mistery" from Africa, now from DRC:
I have found location on the Net, on the blog page -
Man-made Lakes Of Africa - authored by blogger Zero Control.
They say these are some man-made patterns. Parts of some kind of "water-management" process, which eventually leads to bigger water surfaces.

for an unknown reason, I am sceptic... as if I have already heard about them somewhere before in oGEC times...
that is why I have shared here as a question addressed to all experts of GEC: - whadda spiral hell do you think is that all over the place, where that light coloured vegetation covers the water?
three sites I have placemarked. - the second one in attached kmz folder signs a site, where nothing happened, except that spiral pattern has changed from 2009 to 2012. also by the third marker, this change can be observed.
(check GE historical imagery by these).
swamp spirals - DRC.kmz (1.23 KB)
has anyone around heard about these before? - any explanation? - any ideas?
Thanks!
g