I have come to the conclusion that finding any kind of items you are looking for is a matter of training your eye to see what you are hoping to find In other words when I am deer hunting I look to see an ear ,leg ,or the back of a deer standing near a small tree I Am not trying to see the entire deer Rather the straight line of the back of the deer that is going left to right and not up and down In other words look for What does not belong Now if I am hunting shed deer antlers I am focusing on some thing white And the curved shape is a primary object to look for I have never found an arrow head or other type of primitive artifact but I suspect that color would be a way to narrow down those types of things instead of looking for the entire object rry to see something that is out of place based on it's color In other words there are ways to train your eye to see what you are hoping to see Don't look for the entire picture I suspect that one could learn to find primitive objects in the dark You are looking for shapes and shadows no matter the light conditions anyway you go about it finding them so do what you think would be the best way tohunt them