What is the lonely stone in Stardew Valley?

What is the lonely stone in Stardew Valley? The Lonely Stone is a location at the bottom of the map, south of the fishing shack. The map itself puts the location southeast of the docks on the beach, and clicking on that spot on the map makes a “stone breaking” noise. And yet, there’s nothing there at all. No Lonely Stone.

The Lonely Stone is a location at the bottom of the map, south of the fishing shack. The map itself puts the location southeast of the docks on the beach, and clicking on that spot on the map makes a “stone breaking” noise. And yet, there’s nothing there at all. No Lonely Stone.