I'll take a cave. any one of them is fine.
The "Lost Tunnels", found in Northwestern-Inland-Northmoor, 2-4 zones of average size, once home to a tribe in the early first era of Bretonordic people (whom weren't being enslaved by the Direnni here, unlike the other's of their race in the rest of the province), however has long since been abandoned (many thousands of years), though there should be a camp near the entrance of the interior (though not inhabited, just a traveler's camp not used for months/years, the rest of the cave not being explored at all), the deepest parts of the cave can have some sort of alter/ruins (use the ruin set found under Dungeons/Misc) which would be from the first era. Please don't use any containers, as they will contain level-lists of items found in Cyrodiil, new containers will be included in the resource file, and containers can be added then. You can add pathgrids, but please no Npcs or creatures, and please don't create any new objects (and if you want to make anything scripted within the dungeon, please post in the thread to let the team leaders know first). The ID for the cell should be HRLostTunnels01 (and subsequently 02, 03, etc for any extra cells within the cave system).
The dungeon will probably be incorperated into a quest later on

Also if you finish this cave, or even feel like making two at once, we have several more that can be done in the stock cave set

Cheers,
The Old Ye Bard