Masayendisiti kusvika parizvino vakaziva chete kirasi imwe geological chinhu pamusoro Umbriel <unk> craters. The pamusoro Umbriel ane zvakawanda uye makuru craters pane Ariel uye Titania. Zvisinei, rinoratidza zvishoma geological basa. Kutaura zvazviri, pakati Uranian mwedzi chete Oberon ane zvakawanda kukanganisa craters pane Umbriel. The akacherechedza crater diameters siyana kubva makiromita mashoma panguva yakaderera mugumo kuti 210 makiromita nokuti chikuru anozivikanwa gomba, Wokolouth. craters zvose kuzivikanwa pamusoro Umbriel vane nechepakati nenhongonya, asi hapana crater ane mwaranzi. Pedyo neEquator Umbriel raMwari nhema kupfuura akakurumbira pamusoro chinhu: Wunda crater, ine dhayamita anenge 131 km.
Wunda