Hidden people dwelling within rocks and hills

Dwarf

Below that mythic ceiling runs the folklore: short but powerfully built beings who look old from birth — the males wear long grey beards, and the species is said to reach maturity at three years — living underground by preference, where they mine gold and precious stones and practice the crafts for which their name became a byword.

Huldufólk

They live in rocks and hills, practicing their own forms of culture and governance, and they engage with humans in helpful, harmful, or mischievous ways, embodying the mystery and magic of the Icelandic landscape.