Lost to the Ages - p. 2 | Mutual side missions TES V: Skyrim - Dawnguard Guide

Last update: 11 May 2016

New primary objective: Solve the Tonal Lock

Further on you will come across a large stone gate protected by a complicated lock. In order to open it, you need to shoot the items around the stone fact in the proper order (aim at the blue crystals).

One of the hints can be found inside Katria's journal and the second one on a scrap of paper lying beside the corpse of one of the adventurers.

The proper order can be seen on the above screen.

New primary objective: Obtain 4 shards

Behind the gate you will find the first shard.

The second piece can be found in Raldbthar, west of Windhelm.

The cave is pointed on a map inside Katria's journal. It will appear on the world map only after you get close enough to it.

After getting inside, head straight all the way while avoiding traps and defeating Dwemer constructions.

That way you will reach a lift which will take you to the Raldbthar Deep Market.

By heading further you will reach a tall tower with a drawbridge.

To lower it, press the button placed on the console on the nearby table.

A bit further you should come across a locked door and 4 Dwemer buttons. In order to open the gate, press the second one from the right.

Behind the grate you will find another bridge. It can be lowered using the nearby button, but the mechanism doesn't work because of 4 blocked gears.