What is the Bajoran wormhole?

Could you elaborate on the enigmatic Bajoran wormhole? It seems to be a crucial component in the interstellar travel depicted in the popular science fiction franchise, yet its workings and origins remain shrouded in mystery. What is its significance in the galactic landscape? How does it facilitate travel between distant star systems? And perhaps most intriguingly, what are the potential dangers or unknown factors that travelers must be wary of when traversing through this mysterious portal? Your insights into this fascinating interstellar phenomenon would be greatly appreciated.