Meryk Cliffs
From DQWiki
These large cliffs bound the Meryk Plateau and these rise up 3000ft (on average) above the Gargan Plain at its base. The cliffs are a mixture of Sandstone, Limestone, Chalk and Basalt.
The town of Tykal is the easternmost town on the Cliffs/PLateau and there is a dangerous road leading down from there to the town of Petrya at the base of the cliffs.