Sursi
Sursi is a large plateau in southern Aerona[1] and also the name of a village in this area. It is home to a race of fabled mesa pegasi. When a womand marries in Sursi, she must visit the mesa. It is said that, if the woman is pure of heart, she and her family will be blessed by a pegasus.
Here, in the cold waters of a deep lake, it was contained the only portal from Dominaria to Ulgrotha, which was probably destroyed by the disasters that happened on Dominaria. Using the portal required to pass a doorway made of three "menhir stones" when the Mist Moon was full and snow was on the ground. The portal leads to the Koskun Mountains, home to Eron the Relentless. [2]
On the Plains of Sursi, Serra was attacked by another disguised planeswalker, who thought that her wedding ring was some powerful artifact. Brother Angus took her body and created the Cathedral of Serra near the Sursi village.