AERIAL over great rift valley, volcano-formed landscape, grassland (three shots). AERIAL over desert, herds below. MS of wildebeest moving in herds on dry plain. CU of wildebeest hooving in dust. LS of hyena and wildebeest migrating in background. ELS of herds moving on plain in distance. LS of tired wildebeest herd in middleground, dust cloud blowing in background. (471)