Explore Hellfire Peninsula

Head to Falcon Watch at 27, 61 in Hellfire Peninsula to reveal that area of the map.

Travel to the Temple of Telhamat at 22, 40 and the nearby Fallen Sky Ridge at 14, 42 to uncover the western regions.

Continue south along the western edge to the Ruins of Sha'naar at 15, 60 to reveal that section of the map.

Travel to the Mag'har Post at 32, 28 in the northern interior to uncover that portion of the map.

Head to the Pools of Aggonar at 42, 31 to reveal the north-central area of Hellfire Peninsula.

Visit Hellfire Citadel at 49, 50, which sits in the center of the zone, to reveal the surrounding map area.

Stop at Honor Hold at 55, 63 and Thrallmar at 56, 37 to uncover the central portions of the map on both the northern and southern sides.

Travel to the Throne of Kil'jaeden at 63, 18 in the far northeast; note that a ground route exists into this area from the surrounding terrain.

Head to Forge Camp Mageddon at 64, 31 to reveal the northeastern interior section of the map.

Travel to The Legion Front at 69, 53 on the eastern side of the zone to uncover that area.

Visit Zeth'Gor at 69, 71 in the southeastern region to reveal that portion of the map.

Travel through Void Ridge, visiting both at 76, 63 and at 76, 71 on the far eastern edge to fully uncover that area.

Head to the Expedition Armory at 54, 83 in the southern part of the zone to reveal that section of the map.

Travel to the Den of Haal'esh at 29, 74 in the southwestern area to uncover that region.

Finally, visit the Warp Fields at 45, 83 in the south-central area; this location may appear labeled as Gor'gaz Outpost on the map, but it is still listed in-game as The Warp Fields and counts for the achievement.