X for treasure

I've used this mill before as a blip-object a couple of times, it's "The King", one of three mills close to where I live, and the biggest of its type in the county. The owner, an old man who also function as a guide during summer season, has put lights up on the wings making the mill look like a huge X. The mill-X is fully visible in daytime from the mainland, because of its size and during nighttime because of its lights, making it a huge landmark, always noticed, marking the place on the virtual map, where the treasure is. I know I found my treasure here anyway.