[SPOILERS] Rock formation in Holon

There’s this island in Holon Lake, and theres some rocks and some blocked off rock climb spots. The prof is there and she gives some dialogue saying something about it having to deal with deltas and sounding familiar to and old Kalos tale… I’m not sure what to do here, can someone help?

From what I know it does nothing. Delta turtwig goes there once though

oh really? Man I stressed myself with that for like 20min now i feel dumb haha thanks

I guess since youve answered like every question here, I hope you dont mind me asking, what do you do about that blocked off cave in i think settlement alpha?

That has to do with the plot