you'll find it in the mages guild quests anyway, but it's NNE from cheydinhal, i think.
Dark Fissure is West of Vaermina's Shrine.
Hero Hill is located Southeast of Cheydinhal. It is South of the Rickety Mine and North of the Dark Fissure.
The dark elf is very good for spells.
fissure
No!
If your a high enough level (somewhere around 20) you can get them from either the dark brotherhood or off of a creature in oblivion.
Demon Souls & Dark Souls Oblivion Skyrim
its not a cheat code, you get it when joining the dark brotherhood
Syndelius is a good dark elf name i personally think
The Oblivion Keyblade is the strongest Keyblade Sora can wield except for the Ultima Weapon, which is made through synthesis. The Oblivion is mostly black and purple with a cool design. The Oblivion is also known as the Dark Blade, which is opposed to the Light blade called the Oathkeeper, the blade given by Kairi.
A fissure is a crack-like sore.Fissure.
The Dark Brotherhood is simply a side-quest in the game. It isn't crucial to the storyline but being in the Dark Brotherhood allows you to get weapons/spells/etc. that are normally unattainable.