It can constantly bring forth Dwarven warrior spirits to attack you.

Here is a device that can fairly be described as a Spirit Anvil.

Once you make a certain part of the way across the room, you'll get attacked by two Stone Golems at once.

The next chamber here has two Blade traps, which a Rogue can disarm.

The other is that the next Golem has to run a longer distance to catch up to you, and this can buy you time for healing spells or whatever other preparations you want to make.The third point is that it also makes possible the drawing-out technique, whereby you can lure forward at most one or two Golems ahead of the rest, and fight them one or two at a time instead of all at once. One is that you're not fighting the Golems while taking constant poison damage. Once it goes down, the next will attack, and the next, and so on.The way to do this is to hit one switch, and immediately run out of the room. The catch is, as soon as you hit one of the levers, one of several Stone Golems in this room will attack. To shut off the poison gas, you have to hit four levers at the side of the room.

Here is the first of the traps that is designed to prevent entry to the Anvil.

Here you will have to fight at least 3 large waves of Darkspawn.

You'll also be brought to the party selection screen, where it becomes apparent that Oghren has to come along.

She will seal the way behind you, meaning that you can't leave until you've made your way to the Anvil of the Void that lies deep within these caves.

Here is where you'll encounter the Dwarven Paragon, Branka.

Here is the way back to the Deep Roads.

Dragon age origins the dead trenches