Fig. 1: Examples of large UGs and the destruction they cause in the DRC.
From: Mapping urban gullies in the Democratic Republic of the Congo

a, Tchad gully (Kinshasa, 26 November 2019). b, Funu gully (Bukavu, 8 July 2021). c,d, Google Earth imagery of UGs in Kikwit (8 July 2004). Gully extents are mapped with a white polygon. e,f, The same gullies on 24 May 2018 with their new extent mapped in red. Scale bar, 150 m (c–f).