Awesome! I had been working on a similar project couldn't figure out the snow on the trees for the life of me! It's great to see how you approached it. The work look great! Thanks for sharing your process.
I believe author would be surprised that it's not american, but soviet bunker :)
Vinícius Cortez has recently presented an awesome Allegorithmic Tribute project. It is a complex substance inspired by the Dead Fish Pile from Eric Wiley (you can read more about it here) that was created with the help of Substance Designer. The artist gave a little talk, sharing some details on the production process.
This Substance is my most varied so far, gave me a lot of work but at the same time was very fun to do, the idea was to make a material to study better more complex shapes.
I’ll talk a little about the main elements.
For the chantilly was even more simple.
And for the Allegorithmic text was very simple too.
Non uniform blur is a very powerful node! Hope these simple techniques can help you.