According to Odin, Svartalfheim was like a massive forest with abnormally large trees, with all the planet being as green as physically possible, the dwarves apparently are very eco- friendly, doing their best to not mess the environment, and to that end, their living arrangements were usually symbiotic with their planet, with them living under the rocks, in caves, trees and in underground cities.
Percy Jackson: The God of Magic
Book&Literature · CORNBRINGER
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