Help please
There are some areas of map that have nothing in it, like the Griffonrook Run area, besides the JP itself, there is nothing there but counts towards the Shiverpeaks Explorer.
Check this: http://wiki.guildwars2.com/wiki/Shiverpeaks
Click in the Explorable zones to see where you probably missed a part of the map.
(and the other 8 elite specs maxed too)
The explorer achievement is completely different than map completion. What you need to do is make sure that all areas of the map are clear (not fuzzed out). So you need areas that have no POIs, vistas or hearts. This could be a random cave, JP, whatever. I ended up getting “Orr explorer” achievement quite by accident when I found an underground tunnel leading to mobs, a vet and a chest. I had map completion for a long time before that though.