Kapla, first time checking your photos, seemed there could be a gold signal. The 2 main areas I got hits on are marked by rectangles. Because the box in the background was more like an archaeological type, it is marked green. The red box area seems slightly deeper than the green, although both could be down deep. Since the metal box of gold coins could be in the area of this photo, I would check for it at the red first. The other green spots with a black center, in the background are for archaeological. If not the right location for the metal box of treasure, then most likely the red signals will just be deep artifacts of value or loose coins.