Also known as the Explorers' Guild this Dwarven lead branch of the Alliance Vanguard is really more interested in pursuing their personal agenda of uncovering the origins of the dwarven people than going after the Lich King. However since their research has managed to provided the Alliance with detailed maps, along analysis of all new resources discovered, they do not begrudge them their obsession.
Headquartered out of the Hall of Explorers in Ironforge the Explorers' League has been around since the very beginning of the World of Warcraft on line game and can be found scattered across every part of the globe even reaching into Outland. However it was only with the Wrath of the Lich King expansion that players gained the opportunity to finally earn reputation with this faction. (Much to the joy of many of us.) But prior to patch 3.3 it was NOT easy.
While you will find Explorers' League members scattered all about Northrend, reputation providing quests are located in only two zones, Howling Fjord and Storm Peaks. Of the 36 quests this faction gives only ONE is a daily, Steel Gate Patrol. Thankfully it is a low level one. So prior to patch 3.3 if you wanted to reach exalted reputation with this faction you could expect to do Steel Gate Patrol about 122 times. (That was if you were human, non humans it was even more.) Thankfully that is no longer an issue. Players will now get this reputation as spill over from doing Argent Tournament Daily quests as well as from running level 80 dungeons.