Chronicles Volume III, page 159, ‘Fury of the Sunwell.’
"Members of the Horde and Alliance soon converged on the Sunwell and stood alongside the Shattered Sun Offensive. Liadrin directed the Horde’s champions to hunt down Kael’thas Sunstrider and ended him once and for all.
"Meanwhile, the Alliance infiltrated the Sunwell Plateau, which housed the Sunwell itself. Kael’thas’ spellwork had torn a rift in the fount’s depths. Before the Alliance’s eyes, Kil’jaeden emerged from the portal and into the world.
"The Alliance soldiers fought with all their strength to drive Kil’jaeden back through the portal, but their efforts had little effect. In the end, it was Anveena Teague who turned the tide of battle. She sacrificed her own existence, expending what was left of her energy to weaken Kil’jaeden. It was just enough for the Alliance to finally banish the demon lord and close his gateway into Azeroth.
"The world was spared from the Legion once more, but there were consequences. Kael’thas’ meddling had tainted the Sunwell. As before, corruptive energies coursed through the fount, and they would soon spread throughout Quel’Thalas and engulf the blood elves. Lor’themar Theron and his followers considered destroying the Sunwell again, but another solution presented itself.
“Velen had come to the Sunwell to pay his respects to M’uru. Little was left of the naaru save its heart. Velen sensed a glimmer of power - of hope - in what remained of M’uru. He used the naaru’s heart to cleanse the Sunwell and transform it into a fount of Holy Light and arcane magic. Its brilliant energy blazed across land and sky for all in Quel’Thalas to see.”
So, there you have it. The Alliance secured your Sunwell and then purified and re-ignited it for you. Anveena sacrificed herself to make it possible to banish Kil’jaeden. She didn’t purify the Sunwell. Lor’themar was considering destroying it a second time.
Just talk to any Belf NPC…they never stop telling you to “remember the sunwell” so it’s not like we could forget.
Then on the other hand to the post topic… What if the Dark Lady DOES remember the sunwell and how the High elves were utterly defeated by the scourge. What if everything she has been doing since then was to protect “her people”…but with an evil twist because she was twisted by the Lich King?
This is IT! Blizzard has made blood elves the race that represents The Light in the Horde so move on it! Make them militant like the Lightforged who casually ask if you need help smiting anyone who stands against the Light when you talk to them.
Sylvanas is unholy and would probably burst into flames if she got near the sunwell.
It’ll probably be too painful for her to see it again. It’ll reminder her too much of when she was a high elf and died. High elves created the Sunwell.