Update at bottom in form of comment👇
had this marked as a potential site, from searching around my area on lidar. Did some more research on it last week. I also drove by to realize it was public property, so I went out there yesterday early afternoon and stayed until dark. It’s a lot bigger...
Found this really neat bell at an older playground. It was sitting in the sand where the structure was... how did it get there??? Maybe a kid was playing with it and lost it there...? It was only halfway buried. How old do you think it is?