When creatures speak of this forest, they say unbelievably horrible things happened to them. Things that leave you scarred for life, scared of every shadow and corner. Nightmares that haunt you in real life.
Unbeknownst to them, the truth is hidden much deeper. The light elves believe the ground was cursed for whatever reason, but it is actually a protection. The forest stands upon a hidden cave in which the River of Clearness flows. It just so happens to be where the Mímisbrunnr itself lies, well hidden, deep underneath the earth.
No one knows it is there of course - it changes its entrance every few centuries, appearing on random hidden places. That is why the sagas contain very little information about its exact location.
Yrsa didn't know what she was getting into when she entered the forest. She was hoping for a clear shot at the goddess of death. No other god had done it before, but she thought she would be just fine considering her powers.
Nothing was fine.
After she saw Skadi's body fall to the floor, she fell to the ground screaming. She was her dearest friend since as long as her memories go. It hurt her deeply, like a piece of her was ripped out.
She stood up, filled with rage and sadness. Her eyes flashed an emotion, unlike anything Hel has ever seen. Before she knew it, Yrsa was moving towards her with her blade out. She didn't care whether she died at that moment or not.
She struck her once, then twice, but no matter how strong she was, Hel was stronger. She used her dark magic to blind Yrsa, but she kept swinging until she cut a long line on the side of her cheek.
Hel was angry, but she realised this was finally an opponent worthy of her. They fought and it seemed there was no end. Then, Yrsa used the trick up her sleeve. She turned into a bear and struck Hel down with a strong blow.
Hel dissolved into ashes and all that was left was an ominous black blade. The God Killer. A long, thin sword with black, glittery gems and sacred writing. It was a weapon meant for destruction, but its powers reached well beyond that. It was a shame it ended up in the wrong hands.
Yrsa turned back and picked the sword up, but it too turned to ashes under her touch. Not only the sword but everything around her. The stones, the trees, the ground. Darkness enveloped her surroundings. There was only a pathway in the distance, lit by torches.
She ran in its direction and saw a tunnel that led her to a dark lit room. There stood a blood-filled well in the middle. In it was a large, pale head with closed eyes and runes drawn all over its skin, etched by a blade.
"It cannot be", Yrsa whispered, looking at the sight before her. The blade was placed on the edge of the well and once Yrsa's eyes adjusted to the darkness, she took a better look at the head and immediately recognised it.
It was Mímir, the Wise One.