The original post didn't seem to carry over very well, so I'm reposting my Serendia Secret Caves map!

I'm going to revisit this at some point and get the ones from Mediah included at some point too. A lot of these caves are featured pretty heavily in Truffle Farming rotations, but a lot of them just contain interesting details and neat scenes for those who love exploring!

Pretty good mapping
Missed 1 secret cave
and one old mission location could also be now named as Secret location, since there is no quests leading players in anymore. Just like "Veiled Labyrinth" is an old questing location.