you have to do the pink general summer quest in your log
I believe it's new horizons, takes u to north arch then to 1k the ur done I think
Close, but no cigar Ranny.
You start the quest on the bottom left of archosaur(check the map), brings you to South Arch to talk to the Primal Messenger, Then mid of Archosaur, then 1k for the world spire, then North Archo to talk to the archosaur student(correct me if I'm wrong), then you complete the quest in the middle of Archo.