The Frigid Deep

The Frigid Deep is a part of the path leading to the, in the Snow Cave in The Island.

Surroundings
After having broken a few crystals, from the Ice Wyrm's Belly, you come in a corridor at (28.42/23.93).

You must jump over a pool of icy water to go on.

Then this path leads you to the Artifact's room, described in-game as "????" in (29.88/25.34).

Like most of the cave, the temperature can fall below -27 °C (-16 °F) during the night.