ToME: the Tales of Maj'Eyal

I recently beat the game with my shadowblade, but I failed the timed event earlier in the game which resulted in the destruction of the sunwall. So after I went back into the far east to complete some stuff there, I went to the town but found myself unable to enter because it had been destroyed, thus no access to the farportal inside. Is there any alternative way back to Majeyal?

You should be able to use one of the portals in the sanctum of High Peak to return.