Ice is such an underused terrain type, and as of yet, no one has even attempted to make Ice interiors. I've actually wanted to do this for quite some time, but I only recently tried.
This is outpost to high outpost, it can work Outpost to outpost and High Outpost to Outpost, the tiles are exactly the same. The only trickiness to this is remembering which tiles are supposed to be high outpost and whichare supposed to be normal outpost. The bottom blend uses doodads, in conjunction with DTs, and obviously still needs work. The main wall blend isn't the only one I've found, but it mirrors the nicest. The area supposed a quick attempt at making a bathroom (sinks and drainage).
I've attached the map as well, for those interested in improving/experimenting with/stealing the few blends I've found.
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That's amazing. I'll probably use this if I ever make an Ice Tileset map.