Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Ngorongoro Conservation Area' has mentioned 'Gorge' in the following places:
Occurrence Sentence Text Source
The northwest portion of the conservation area consists of the Serengeti Plains, the Salei Plains, the Oldupai Gorge, and the Gol Mountains inselbergs.
[25] The gorge is named after 'Oldupaai', the Maasai word for the wild sisal plant, Sansevieria ehrenbergii.
Around 500,000 years ago seismic activity diverted a nearby stream which began to cut down into the sediments, revealing seven main layers in the walls of the gorge.