Mirrodin playtest cards IV: Artifact lands

Here on Magic Arcana we've seen several other examples of Mirrodin playtest cards (here, here, and here). In those cases, the cards' mechanics were in flux as much as their flavor.

Today we look at playtest versions of the artifact lands, that common cycle of nonbasic lands that fuel everything from Myr Enforcer to Atog. In these early versions, these five lands (now known as Ancient Den, Seat of the Synod, Vault of Whispers, Great Furnace, and Tree of Tales) are mechanically identical to their final counterparts, but they bore short, simple playtest names.

Can you match each playtest name to its finalized Mirrodin name? We've blurred out the color of mana that each produces, so you only have the name to go on. Note: the basic land card frames behind the playtest stickers are no help either! (Click each image for the answer.)