Awesome pictures! I have an adventure idea that's been on the back burner for a long time. It's called The Ice Sphynx, inspired by the Roerich painting of same name. It involves a cabal of cryomancers who seek to see the whole of Hyperborea once again in the grip of the Ashen Worm's mantle of glacial ice. It's just a few pages of notes right now, but your pictures are inspiring to me -- they brought me right back to thinking about it! Here is the Roerich picture:



The adventure idea is also inspired by Fire and Ice, both the animated film and the Robert Frost poem:

Some say the world will end in fire,
Some say in ice.
From what I’ve tasted of desire
I hold with those who favor fire.
But if it had to perish twice,
I think I know enough of hate
To say that for destruction ice
Is also great
And would suffice.

 

Not too dissimilar to a Land of Black Ice adventure concept I sketched in my design journal a few years ago, Jeff