The Avid Horizon

"Two vast winged shapes guard a gate of something like resin, smooth but uneven. It is deep gant - the colour that remains when all other colours have been eaten. Ice crusts over the crack between its valves. Approach, and your breath freezes, falls tinkling in shards from the air. It would be utterly foolish to touch the thing.

A merciless wind blows from everywhere to everywhere. It passes without effort through your bridge-coat, your flesh, your lungs. The dock lies empty."

"This is the end."

Brrrrrr. Art from Sunless Sea.

Avid Horizon is the northernmost known place in the Unterzee. It's bitter cold there. Nobody's gone further. Dozens have died trying. Zailors, of course, are advised not to go.  One of the docks has a chance to beg for forgiveness for those who have been exiled from London, but they must be willing to sacrifice everything, and there is no guarentee the Empress will answer.

The realm of Judgements seems to lie beyond the gate.  Passing through it strips you of your body, and you must forge a new one.