It is a Dwemer ruin located deep within the Jerall Mountains. Shortly after entering the ruins, one hears the voice of the deceased explorer Katria telling the player to turn back. As the player crosses a gap on the side of a fallen pillar, Katria appears and explains that she had been pursuing a Dwemer Aetherium forge that was capable of making such powerful weapons that it drove the Dwemer into civil war. Katria tells of how she died while attempting to find the lost forge. The player can opt to enlist Katria's help while delving through the ruins which experience periodical earthquakes causing bits of the ruins to fall apart while plenty of Falmer jump out of their holes in the canyon walls. As the player makes it near the bottom of the ruins, Katria points out her lost bow (Zephyr with %30 extra shooting speed), which will be needed to complete the puzzle later on if one does not have a bow on hand. Finally reaching the bottom, one finds a set of 3 locked doors with a large Dwemer head and 5 tonal resonators above the three doors. There are 5 tonal resonators which must be hit in correct order in order to open the doors. If hit in the improper sequence, traps will trigger which include explosive arrows, dwemer spheres, dwemer spiders, as well as a centurion. The resonators are arranged in two rows; three on bottom, two on top. The correct order is bottom left, bottom right, top left, top right, bottom middle. After the doors open, the player can enter the treasure room that contains the first of 4 Aetherium keys used to activate the lost Dwemer forge.
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