Corruption Stones [Quest]

Text of the Quest:

Corruption Stones Strange stones emanating necromantic energy have appeared on the sacred grounds of Tanzelwil. Priestess Langwe believes they might be tied to the disturbed demeanor of the Ancestral Spirits. Priestess Langwe provided me with an Altmer Holy Symbol to use on the mysterious stone.

Tasks

Use the Altmer Holy Symbol on the Corruption Stone

Priestess Langwe: Careful, don't get too close to the stone! It appears to be emanating dark necromantic energies.
Hero: What is that thing?
Priestess Langwe: I'm not entirely certain. But it does look menacing, doesn't it? These stones appeared overnight, at key locations throughout the ruins. It's no coincidence that the ancestral spirits went mad that very day. I'm certain there's a connection.
Hero: It certainly doesn't look natural.
Priestess Langwe: No, it doesn't, does it? There are dark forces at work here. I have a powerful Altmer Holy Symbol used for blessings at this site. I thought I might try using it on the stone, but I'm afraid I haven't the nerve. Would you be willing to try it?
Hero: Leave it to me.

Priestess Langwe: My gods, it worked! You've destroyed the stone!
Hero: What should I do with your Holy Symbol?
Priestess Langwe: Keep it, for the time being. You may need it. If any more of these stones turn up, I'll find you. In the meantime, I should inform the Queen of our progress.

Priestess Aranwen: Did you see her? She tried to kill me! Colonwe is an ancestral spirit that haunts this grove. She's always been a mischievous one, but I've never seen her so violent!
Hero: Where is this spirit?
Priestess Aranwen: She's lying in wait, ready to pounce as soon as I lower my defenses! I can't complete the Queen's ceremony unless you banish her from this plane. Be careful. She'll tear your throat out if you give her half the chance!

Priestess Langwe: What fascinating artifacts these stones are. I wonder where they came from?
Hero: Do you want your Holy Symbol back?
Priestess Langwe: Not until the last of the stones has been destroyed. Only one remains, as far as I can tell.

Priestess Langwe: Something's happened. The spirits appear to be growing docile again.
Hero: What do you mean?
Priestess Langwe: You've done it! The madness has left them, and the Ancestral Spirits are at peace. I can still sense residual necromantic energy, so be careful. The stones were powerful. We may feel their influence for some time to come.
Hero: Complete Quest.