Quickest way to get there is to speak to the merchant Koros Splinterlimb on the floor below where Madria is located and buy a Mission Stone of the Void that will take you directly to The Overlook.
Do not accept the quest he offers or it will disrupt the quest line you are working. If this happens delete the quest he just gave you and talk to him again.
Speak to Natasha, the mystic on Kerra Isle in The Sundered Frontier ( 1191, 42, 2244 ) Copy/waypoint 1191, 42, 2244. After a brief conversation you can choose the option to go into a trance and get teleported into A Spiritual Pocket.
Speak to Kaltuk Ironstein. You will be teleported back to Kerra Isle at the end of the conversation.
Enter Miragul's Planar Shard (tradeskill) in Everfrost ( -164, 10, -372 ) Copy/waypoint -164.19, 9.65, -372.02(the entrance is the same as the shard quests instances, and the tradeskill zone will be shown on the zone list) and speak to a vigilant sentry.
You have 3 minutes to find Miragul's Notes. They are clicky books on the table at ( -106, 0, 25 ) Copy/waypoint -106, 0, 25
The book is buried under a pile of other books and can be hard to locate. The timer display disappears, but the timer does NOT stop. Be sure to leave before the mobs reaggro.
Leave the zone and scribe Miragul's collected notes on crafting and craft the Armoring Tongs. This requires a rare kaborite cluster, which will be returned to you when you complete the quest (see rewards) and 2 Quicksilver clusters, 2 Ambers and 1 Ethereal coal. There is no forge in Quel'ule so remember to craft the Armoring Tongs before returning to the Researcher, or simply bring along a portable forge.