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I think that this should actually be the location of FBGM (Gumare Airport), since it's right north of the town of Gumare. The village of Nokaneng is 30-40 km to the south. Even Garmin has this wrong (if it is wrong).
I think that this airport should actually be where FBNN (Nokaneng Airport) is shown just to the north of the town of Gumare, and FBNN should be 30-40 km south in the village of Nokaneng. If that's true, though, then even Garmin has it wrong right now. Currently, everyone shows Gumare more-or-less in the middle of the town.