Do you mean this? If so, there isn't really a source file (it's all drawn on one layer). If you mean the shore around the example map at the very top, it's also directly drawn around that map on one layer, but here is the source file nonetheless.
Do you mean this? If so, there isn't really a source file (it's all drawn on one layer). If you mean the shore around the example map at the very top, it's also directly drawn around that map on one layer, but here is the source file nonetheless.