Ama-no uki-hashi

So you managed to exit the 1000 Torii Gates. Well, here you are, to the brutally long bridge to Takamagahara, Ame-no-Ukihashi or the "Floating Bridge of Heaven". Below the bridge is an endless sea of gliterring stardust and the sky is filled with stars. You notice something at the side, a sealed cave. Enter it or walk the bridge to Heaven?