This is part of the Kunark Ascending Tradeskill Questline and is but one chunk of several. Please refer back to that article for important details and links to other parts of the questline.

The quests in this article directly follow the ones written up in KA - The Caves.

Search and Rescue (first chunk of it)

Summary: Examine "Collection of Goblin Items", go speak to Glibnox in Twark, then return to the Abandoned Mine Tunnel. Go to the other end of the tunnel and zone into Fens. Then put this quest on hold while you do some further questing (below). Rewards: AAxp, coin, Twark Transport Totem, Sovereign of Rile.

Details: Examine the Collection of Goblin Items that Skethusk gave you, and accept the Search and Rescue quest. Head back to Twark, and speak with Glibnox (/waypoint 132, -164, -768). He recognizes the items as having belonged to a clan-brother, Greshdek. When you explain about the spell of forgetfulness on the area, he worries that Greshdek may be lost and have forgotten himself. He asks you to keep an eye out for him, while he keeps an eye out for your missing adventurers. He also gives you a special version of the Twark Transport Totem that can be used to bring Greshdek back to Twark. (Only once you have returned with him and completed this quest will you get a better version of an item with the same name, that prove far more useful in your future travels.)

Being at a loss as to what else to do at this point, you may as well go look. (Growf is safely back in Twark and has some quests for you, but let's hold off on those so as not to confuse you with multiple quest streams in multiple zones at the same time, k? :D)

Fly back to the Collapsed Tunnel (/waypoint -324, 48, 607) that leads you into the Abandoned Mine Tunnel. Click on the rocks to enter, and follow the tracks all the way to the other end. Hang a left at the end of the tracks, and you should find another rockfall labeled Fens of Nathsar (/waypoint -270, 57, -2017). Click on it to zone out, then put progress on this quest on mental hold while you do some work in Fens.

Helping the Nurgan Goblins

If you are a low-level adventurer, be aware that the other goblins in this area are aggro until you complete several quests with this trio. Move carefully and you should be ok. There will also be a couple quests that you will want to save for last, in order to have enough faction to wander safely around the camp, and those have red questnames in the table below.

For the first couple quests from each of these goblins, it may be easier to grab quests from all three goblins at once, so I am going to try something a bit different with the walk-through for them.

Irontooth

Rumbletum

Brappa

By looking at the above table, you can see that, if you are a low-level adventurer, you will want to do the first two of Irontooth's quests, the first of Rumbletum's quests, and all of Brappa's quests before you finish up the last of Irontooth's and the last 2 of Rumbletum's, as you should then have the faction to be safe amidst the Nurgan goblins in the area.

Rock for Squirmy-Wormies quest

Temple Visitor

Complete all of the quests in the table above and Brappa will have a fresh quest for you. After saying that you've been useful enough that they've decided not to eat you(1), you finally get some answers about Greshdek and are given directions to the temple of Nu'Roga, as well as permission to enter it. You also have received enough faction that the goblins inside won't attack you, even if you are a low-level squishie. Head for Nu'roga (/waypoint -187, 74, 1963) and zone in. You will get a quest completion popup and be awarded Reward is AAxp, coin, 5000 Broken Toe Clan faction, 5000 Goblins of Nurga faction and Sovereign of Rile.

Search and Rescue (second chunk of it)

Keep going up, up, and more up once inside Nu'Roga, as each level should have at least one ramp leading to the level above it. Squishies should note that there's a possibility that they will trip over a glowie that can attack back, so if you're a low level adventurer in there, you harvest glowies at your own risk. Once you have reached the very top level in the temple, you will find Greshdek (/waypoint -24, 155, -32) sitting on the ground, clad only in a loincloth. Yep, not only are his memories scrambled, but compared to all the other goblins you've seen in Kunark, the poor thing seems woefully underclothed. Finish speaking with him, then, while standing beside him, activate the Twark Transport Totem that Glibnox gave you at the start of the quest. Then speak to Glibnox to finish the quest. Reward is AAxp, coin, Sovereign of Rile, 4000 Bloody Tooth Clan faction, and your shiny new version of the Twark Transport Totem that you get to keep. (It will come in VERY handy when doing further questing in Obulus Frontier!)

After completion of this chunk of the questline, you may proceed to Twark, Round 2 & Nye'Caelona.