Originally Posted by GuildWiki

Eredon Terrace: If you are part of the alliance that owns this town you can access a glitched area behind the exclusive area that allows you to enter the outskirts of the town. Although the area explored is permanently in fog on the map, it counts for about 0.5%.
If you are of the opposite faction then the one controlling the town, you can use a trick to enter the exclusive and the glitched area: Change, if necessary, your secondary profession to Assassin and equip Aura of Displacement or Death's Charge. Leave Eredon Terrace through the zone portal into Maishang Hills. On your left you will see a shrine. Talk to the Priest and choose to fight him (Note: You will not have this option if you are of the Priest's alignment). Do not kill the Merchant. He will run into Eredon Terrace. If he doesn't, start over again. Once he is inside the town and you are still outside, place him just in your aggro circle and cast your shadow step skill. If everything goes right you will now find yourself inside Eredon Terrace. Keep Aura up all the time, because if you don't you will teleport back to where you were! Also, stepping into the zone portal from either side will send you back to Eredon Terrace, so avoid it until you are finished. You can now walk right through the gate of the exclusive area, although it looks closed, and explore the glitched area. To get there, go across the bridge, and near the Jade crane, there is a hill you can walk up.
If allied with the controlling faction, but not part of that alliance, bring Return, Recall, Shadow Meld or Death's Retreat and lure the nearby wallows to the shrine to force the merchant to flee, and then Shadow Step on him.
The Necromancer skills Necrotic Traversal and Consume Corpse can also be used to reenter the town. Chase the merchant into town and then use ranged attacks to kill him and then use the one of the skills to jump to the body.