You walk for a while. Everything is very quiet. There are no birds singing, no grasshoppers or crickets chirping and no sign of any animals. You begin to wonder if you made the right choice. Then you see something up ahead! It looks like a hill with a dark shadow on its side. But what is making the shadow?
You go up closer to investigate. It's not a shadow it's a cave!
....explore the cave,
.... or keep walking?