You can reach this ruins by going from:
Pearloats Pasture => Aifread’s Hunting Ground => Morgause ruins (eastern exit)
It’s on the underground that located on the northeast of this area.
From the save point, go south and you will find it.
==Broken Baby Horse==
It’s on the middle of the ruins (outside part of this area).
The normin is located on the high platform. Go downstairs through the stairs that located southeast of the Normin, and then destroy the rock pillar.