I've identified 3 sites (red circles) which might have a tunnel/cave or old mine workings. There are some more other type signals which need to be marked yet.
Light yellowish-green circles for archaeological type of signals, including signs/markers. Blue Xs for silver hits. Red circles for sites, caves/tunnels or old mines.
"Not sure what you mean. Was it all collected? Is there any left? "----a silver signal is there, it could be a vein, pieces of ore from eroded veins, sometimes a silver cache. I was just trying to identify here in what form the silver seemed to be.