Along with the oxygen tank, the following most essential items required for surviving the harsh cold climate in the newly added Northern Expedition Island is the Winter Cloak. So, if you are gearing up to climb all the way to the top of the mountain, I highly recommend you read the following article, which will save your life!
To answer the main point of the guide, you can find the Winter Cloak item at the end of the Frigid Cavern right before the beginning of the Cryogenic Canal. This is quite a climb to the top of the mountain, as you have to cross multiple landmarks, areas, and camps before you reach this location. Just pack a glider and an Oxygen Tank to aid you in your journey.
Start climbing from the left and wrap the mountain towards the right when you reach around the Overgrowth Caves to climb the hill towards the left again when you enter the Frigid Cavern. Simply follow these poles with ropes to move upwards the mountain. Also, the glider can be deployed whenever there is space between any two places to reach the other side.
As you progress further into the Frigid Cavern location, you will find the Winter Cloak outside an Orange Colored Tent near the Aqua Blue NPC on top of a Wooden Crate. Pay C$7500, and you can get the Winter Cloak in Fisch.
In the newly added Northern Expedition Update, the player's health is affected in two ways - Temperature and Oxygen Level. To maintain the Oxygen, you have to use any of the newly added Oxygen Tanks in the game to climb higher. For the Temperature, you have to take shelter near any camp/bonfire or use the Winter Cloak. Since relying on a campfire is unpredictable, it is always better to wear a Winter Cloak to focus on your job and worry less about finding a safe location every few minutes.
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