Gold Tunnel Escape

You used to be a miner some years back and you were working in a tunnel that was called the gold tunnel because of the availability of gold ores in that tunnel. The mining project in that area was called off after some time but you had firm belief that there was lot more to be found from that tunnel and so after some years you have returned there. Unfortunately, you enter the tunnel and get lost inside. You have no idea about the way out of there but you know that no one will be coming in to help you get out. Help yourself.