Supposed Destruction of Mezro

Geological / environmental event

The Holy City of Ubtao - Mezro - is apparently destroyed during the Spellplague. All of its inhabitants are killed, and only the cursed ruins of the city remain.   In reality, the Barae forsaw the coming destruction and transposed the entire city into a pocket dimension to save it. They left behind false ruins with hints of where they had gone in order to lure adherents of Ubtao and fool their enemies.