I am a Pc player on steam. Mouse and Keyboard. I was playing a solo game when I realised that if you are in a tunnel or a cave, you can use the digging tool to make yourself go on the other side of the cave wall or the tunnel. You can freely travel between the cave to get material or whatever you want and then come back to where you were before. Which, gives you access to practically everywhere and everything without any effort. In other words, if you manage to make your character pass on the other side of the wall by using the digging tool you can go wherever you want and comeback as you wish.