DunePrune:
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I would only add that I have been flying this route on and off for decades and have never seen the mountain owing to cloud cover and/or poor visibility. Until the other day. A rare CAVU event revealed Mt Cameroon in all her glory, and it came as a shock to realize just how close she is to the track between Malabo and Douala.
This is one of those places where the chart annotations do not convey the stark reality.
Some carriers share your concerns and pay Jeppesen to enhance their airway manual. Here is a snippet of a tailored "RNAV STAR Overview" for FKKD: