>>58131129I think Dark Cave is pretty unique since if you like exploring, you'll have reason to backtrack to it multiple times, making a little more progress with each trip.
>first time: can't see anything, need flash>second time: have flash, blocked by rocks>come back with rock smash, discover a hidden exit and a path back to new bark town>get surf, find a new room but blocked by ledges>get to blackthorn and can explore the final area of the cave