In this guide, you will learn how to get the shotgun in Sons of The Forest. You will come to know the exact location of the shotgun. Try to figure out through your GPS where exactly you have to go.
You will need to come down to a side of the map to this purple indicator, as shown in the image below.
Once you have traveled and you are ready, you need to find a dig site, and then start digging. You will find a dead body, and there is a shotgun on this dead body.