AERIAL SHOTs over Mackenzie River Delta. AERIAL SHOTs of eroded edge of high plateau in lower Mackenzie Delta area. Several high altitude AERIAL SHOTs over cumulus clouds, lower Mackenzie River visible through clouds, including shots of sediment accumulation on river banks as river slows down approaching delta. AERIAL SHOTs of a distinct line of cumulus clouds, shot at same altitude as clouds. AERIAL SHOTs through and around cumulus clouds.