A few days after Gunter and his knights and soldiers left for the expedition.
The Iron Lion Knights remaining in Greyrim completely sealed off the territory.
Although it was a great forest with one of the largest plains on the continent, excluding the 'prairie', the western border had very treacherous rocky areas and mountain ranges.
That treacherous area narrowed like a funnel, and above it lay fertile farmland - that was Greyrim.
In other words, if a horde of monsters were to pour out en masse, they would inevitably have to pass through the Greyrim territory.
There was no other reason why a domain was built in such a dangerous place.
It was planned as a fortress city from the very beginning when it was first pioneered.
Like the first tower that must fall if a monster wave starts from the great forest.
Therefore, the Greyrim domain 'was' a strategically very important place.