The Hero We Need

In your world, the supply of uranium has been depleted due to over-mining, and the only remaining traces of this metal lies in an ancient society everyone has been trying to find. Using your connections in the crime-fighting community, you manage to track down a map from another retired superhero which may lead you to their location.

You head to the ancient ruins where this society is last known to exist, and on your way you discover a secret passageway which leads into a cave. The moon light shines on you as you head in excited to see what you will discover, when you head in you have the choice of going left or right.

Which path do you take?