Waypoint Beacon that shows up on the trench map

[GARGATHUGANOKSREVENG]

I'm sorry, but I don't understand what you mean? Doesn't the mining beacon only spawn on space maps? Another way we could do this is making it spawn next to the elevator, or make the elevator coordinates show up on the map. That would make sense too I think.

"underwater mining beacon" on sea maps. they exist, but they're not a guaranteed spawn, so you probably haven't seen one. they should just make it a guaranteed spawn or something