Missing point of interest
Sorry just checking, but are you sure you went trough every poi and hovered over it to make sure it was named and not “undiscovered point of interest”? It would be easy to count one that looked like you discovered it but hadn’t. You may also want to reference the wiki for that zone to go down the list of poi’s and just double check you have them all.
Hello and first of all, welcome to Guild Wars 2 Are you really sure you have checked all 20 PoIs? Some PoIs can be easily missed, try to check if it’s one of the commonly missed ones in http://wiki.guildwars2.com/wiki/Explorer#Commonly_missed_areas. Good luck.
Edit: removed a non-related link.
And yes, http://wiki.guildwars2.com/wiki/Kessex_Hills contains a list of all PoIs in that map.
If you set your content guide (F11) to disable events and personal story it will point you toward map completion goals. It should direct you to that missing POI.