What would happen in a wormhole?

Could you please elaborate on the concept of a wormhole and explain what might occur within its mysterious depths? Would it be a gateway to another dimension, or a passageway through space-time? Could it potentially lead to unexpected encounters with exotic matter or unknown forces? Furthermore, would the experience within a wormhole be instantaneous or would it involve a significant duration of time? Would it be possible to survive the trip through such a phenomenon, and if so, what might the traveler encounter on the other side? Your insights on this fascinating topic would be greatly appreciated.