After you beat the Storm Titan, you go up to a platform to do the "actual" final boss. I thought that there was no way to go back to that battle without having to do the Storm Titan all over again, but I accidentally found an invisible portal on my way back down.
The portal is to the left of the Storm Titan Gate portal and in between the tree and the chopped down tree.
Can someone else check to see if this is just me or it's a bug that the portal is invisible?
