Darkfall Grotto

It is a large cavern that can only be accessed from the Forgotten Vale.

Notable loot
If the player has acquired the Amethyst Paragon by defeating a Frost Giant in the vale, they will be able to use the Paragon Platform to access a previously unaccessable section of Darkfall Grotto, which is a small spire located beneath the main waterfall. On top of the spire, there is a chest with random loot (usually high-level gems).

Enemies
After droppping into the lake, on the right side of the waterfall, there is a small camp where Feral Falmer have apparently killed the resident Falmer. They are accompanied by small numbers off Chaurus Hunters.

Trivia

 * The initial way to access Darkfall Grotto is by falling down the waterfall located at the western end of the Forgotten Vale's frozen river; after falling down that waterfall, the player will be taken on a short water-slide-esque "ride" through the caverns. This function of fast-moving water in a dungeon was the result of the Skyrim Developer mod week, when one of the tests involved a moving-water dungeon. The water slide eventually leads out into the large cavern in Darkfall Passage.

Appearances

 * The Elder Scrolls V: Dawnguard