There are lots of secret locations hidden around your village in Disney Dreamlight Valley. You often have to venture to these spots for quests, so knowing where to find areas like the Mystical Cave is crucial.
This location is one you unlock fairly early on in the game, so there's a chance you may visit it but forget about it soon after. You're asked to venture back to this spot fairly frequently, so here's where to find the Mystical Cave in Disney Dreamlight Valley.
