Gateway to the Plane of Metal

[Havard]

Okay, so the D20 Blackmoor Sourcebook introduced the idea that Metal and Wood are Elemental Planes, just like Fire, Earth, Air and Water.

They also had things like Metal Elementals and Steel Mephits from the Elemental Plane of Metal.

Now how could this plane be more than just a source of a couple of monsters and perhaps a place to travel for extremely powerful characters?

I'd like to bring the Plane of Metal into a more regular campaign. Maybe something like an elemental node or a gate from that plane into the Prime Plane?

Or perhaps more an artifact. A forge perhaps that taps directly to the Plane of Metal?

However, the Elemental Rulers of Metal are unhappy about this forge existing. Possibly this forge was created during the Age of Giants?

Perhaps Metal Elementals and other creatures are still searching for the Forge?

-Havard