Where in the Oerth is UK6 All that Glitters...?

 OK so UK6 has been retconned into Greyhawk (2000), but where exactly on Oerth does the module fit?

It's commonly accepted that the Indicara correlates with the Amedio Jungle south of the Holds of the Sea Princes and the Ash Mire is a section of the fabled Sea of Dust, with the Hadarna Mountains and Mount Gegesti being considered a specific section of the greater Hellfurnaces range.

The Northern Amedio Jungle Region (excerpt from The Savage Tide web supplement DUNGEON #141)

So looking at the handy map from the DUNGEON #141 web supplement for The Savage Tide Adventure Path, there's a potential section extending northwest from the source of the Bodal River, a few days journey south of the Cauldron-Sasserine region. The Utdoo River then correlates with an upper tributary of the Bodal and Kett's Rapids a relatively isolated trading outpost. The eastern volcano just to the south represents Mt Gegesti, while the western one remains unnamed.

The scale presents a small issue however. 

As written in the module, the passage is ~100 miles long from Terabar in the east to Windgate in the west, yet at this point the Hellfurnaces appears to be about 2-3 times that width, calling for some inflation. As the subterranean passages are affected by a powerful distance distortion effect from the huge earth elementals bound by the greater circles in any case, I don't think this represents a major issue. 

It may, in fact, make an interesting feature of this section as the effect of the insane earth elemental may be warping not only the subterranean area, but also the overlying mountain areas...

So the below insert highlighted in orange is the relevant area in the northwest of the Amedio:

UK6 on Oerth Location (DUNGEON #141 web supplement excerpt)

This location allows me to draw on additional elements from the pre-Pathfinder RPG Shackled City and Savage Tide Adventure Paths (for character backgrounds and NPCs), as well as introduce additional concepts from the Olman culture and explain the presence of the minions of the Scarlet Brotherhood as potential antagonists...

Resources

• Canonfire! "Greyhawk Module Locations"
• The Scarlet Brotherhood, Sean K Reynolds
• The Savage Tide Adventure Path, various authors (DRAGON magazine)
• The Olman Invasion of the Suloise Imperium (article by wolfsire)
• The Green Nightmare: the Amedio Jungle, Roger E Moore (OJ #4)