Explorable area

An explorable area is your party's instance of a zone that lies between cities, outposts, and missions. Explorable areas are where most of the PvE content takes place (the other being missions.)  Mobs in explorable areas and missions are typically geared for a certain  level of player.

Explorable areas are different from missions
Explorable areas differ from missions in a few important ways:
 * When your party dies in a mission, the mission ends. The party leader is given the option to return everyone to the previous town. When your party dies in an explorable area, they are transported to and resurrected at a Resurrection Shrine.
 * Missions have a set list of goals or objectives, whereas explorable areas have none.
 * Missions yield experience upon completion

Getting to explorable areas
To get to an explorable area you simply leave the city or  outpost you're in by walking through the zonepoint. There will be a sign near the zonepoint indicating which zone this exit leads to.