Abode of Eternal Ice
The entrance to the Abode of Eternal Ice is located in the Northern Traveller which can be reached from Gloomy Depths and Blue Abyss.
The Instance is accessible for 24 hours every 5 days for players of level 5 and above.
To gain access the Frosty Cryptos needs to have been studied.
It is a solo instance so you can only enter alone.
It is a good opportunity to earn Quicksilver - as well as special resources (Ice Vine, Ice Lily and Ice Water Lily) and a pet, the Baby Yeti.
Cryptos
There are 5 rooms in the Abode of Eternal Ice and each needs to be unlocked separately by studying the required cryptos. To get one, you will need to collect enough of it's fragments and assemble them by clicking on them in the Elements section of the backpack.
You can get fragments from Ice Bags, which you can buy in the Premium Shop for 0.25 diamonds or in the Exchange tent for 18 Merchant Marks (Guide on Merchant Marks). You can also sometimes obtain the Ice Bags as a win during the Magic Mirror event or during special sales for 30s.
The amount of Quicksilver that you receive depends on your level, the power of the defeated monster and your Juggernaut reputation.