Ngaoundere Plateau

The Ngaoundéré Plateau is a highland area in the Adamawa Region of Cameroon.

There are many trachyte and phonolite plugs across the plateau, and lines of cinder cones from the most recent eruptions.

[3] The plateau contains Tchabal Nganha, a large stratovolcano of basanitic to trachytic composition.

It developed in four main events: eruption of numerous basaltic flows which form the bulk of the mountain; deposit of voluminous breccias, most of which were deeply eroded; eruption of trachytes and phonolites as thick flows; and finally basaltic activity in the summit area.

This has been cited as evidence that the line is not caused by movement of the plate over a hotspot.