There appears to be a hole in the world you can simply swim through in tiragarde.
Its been there for a few days now and persisted through logouts / pc restarts, unsure if its just a me thing or what.
I'm posting this incase anybody else also has this lovely hole and would like to take the opportunity to explore around here.
DC's seem frequent but i can log straight back in and move a bit more before the next DC. Not sure if this was really post worthy but eh.