Eryndlyn a is a dark elves city ("Drow") located in the Underdark
Often in war, it lies as an old ruined city from the pass, with lot of half torn towers, easily mistaken for an abandoned city. Small and uninteresting, it is often left alone from Drow affairs.
Today, it is mostly a trading outpost, torn inside with fights among three major Drow cultist lines. It is not just that the city looks like it has been torn apart; it is always one step from this, due to the constant fighting against clergy of three major Drow deities.
This is an older castle, never finished...
You can find all of pictures here (link)
Here you can see some other Drow cities from me: