How to reach Valley of King Xorbb
Unless you have completed the Portal Attunement quest for the Valley of King Xorbb you'll have to take the long route to this zone. The easiest zone to start in for reaching the Valley of King Xorbb is the Guild Hall. If you're a Wizard or Druid just port on over to North Karana (or East Karana if you're a Druid) instead and skip this first part.
Other classes will have to purchase the Karana Plains pebble from the vendor in your Guild Hall/GGH and travel to North Karana that way. From North Karana you'll want to travel directly east to East Karana. This route is shown in the map above.
After you arrive in East Karana you'll want to travel to the northeast where you'll find the zone line that leads to the Gorge of King Xorbb. Inside that zone is where we'll find the fear crystal we need to click to be taken to the Valley of King Xorbb.
The Fear Crystal is in the northern portion of the Gorge of King Xorbb. Once you arrive follow my map if you need too all the way up to the Fear Crystal which is right next to the NPC Diggs Duggun. My map of the where to go in this zone as well as a picture of what the Fear Crystal looks like can be found below.