How to get to Tol Dagor

Tol Dagor is one of the dungeons from the Battle for Azeroth expansion located in Tiragarde Sound in Kul Tiras.  It is located out to sea, off the east coast and the entrance is not completely obvious from the map.

By standing on the coast (89:51), looking out to sea you can see the island and the Tol Dagor prison which is the location of the dungeon. 

If you fly towards the island in a straight line across the sea you will get there without getting fatigue.  The entrance to the dungeon is located at the base of the big tower.  There is also a flight master there which you can get to fly straight there in the future.

Good luck with the dungeon and I hope this helps anyone who had, like me, totally forgotten how to find the entrance.