Tchabal Nganha is a stratovolcano on the Ngaoundere Plateau, a highland area in the Adamawa Region of Cameroon.

Tchabal Nganha is a large composite volcano located within the Ngaoundere volcanic field in the east of the Adamawa Plateau.

[4] The plateau has a Precambrian metamorphic basement that is intruded by granite and syenite plutons from the Paleozoic.

[3] Although considered by many geologists to be part of the Cameroon line, the silicic volcanism of the Ngaoundere Plateau is younger (11 to 9 million years old) than silicic volcanism in the Western Highlands, with much more alkaline basalts than in the western part of the line.

[5] Basalt and trachyte rock samples from Nganha have K–Ar ages of 7.2, 7.9 and 9.8 Ma (million years).