Shortest current route
Use the beta map's Mushroom Village lane and prioritize the Shell marker before deeper trial cleanup.
Nearby checks
Look for Shattering Stone and other Mushroom Village chest markers while in the same area.
Why the pin is region-level
A region marker is more useful than a false exact pin when the route still needs a precise walkthrough point.
What to do next
Open the map, filter for Shells, and clear nearby Mushroom Village checks before moving deeper into the route.