\Data\Scripts\Editables\51_System_Settings_Race.rb
Should be cave North of Arise Village, normally you get there with a quest and have tag-along NPC that opens the squid face door for you.
On your own go south from the door until you see small whirlpool on the ground that can be interacted with, that will take you to a maze cave with whirlpools in various corners, that connect to other cornes and one takes you outside.
Coastal Fortress, second floor of the inn, there's a soldier, his second quest directs you to MerCamp (after completing his first quest).
You'll probably need to MTL files TagMapNFL_MerCamp, TagMapNFL_OrkCamp2, and TagMapNorthFL in \Text\ENG to make some sense of it.