I mean, you could just hit the Æ key...

Heaps more to read here: https://en.wikipedia.org/wiki/The_Mistress_of_the_Copper_Mountain

The sacral being, the Mistress was surrounded by rituals and taboos, e.g. women did not come down in the mine, because it was the Mistress's domain, and young men seeking her patronage did not marry. The violation of the taboos was supposed to bring a harsh punishment. Children were taught not to shout and quarrel next to the stones, and to keep quiet in the mines, because, according to popular belief, the Maid disliked loud noises. Her distinguishing attributes were lizards, copper and malachite.

The Mistress of the Copper Mountain has the appearance of an extremely beautiful young woman with green eyes. Some of her more distinctive features include dark braided hair, ribbons from thin tinkling copper, and a gown that is made from malachite. She wears a diadem decorated with malachite and precious stones. As a mountain spirit, she is the protector and owner of hidden underground riches. She is said to be always surrounded by her servants, small lizards, which can be green, blue, golden or luminous. The Mistress can appear as a lizard herself. According to the legends, a person who sees the Mistress comes under her spell. She shows kindness to good people and skilled craftsmen, helping them to find jewels and gold, but if her conditions aren't met, the person loses all his luck, skill and can even die. She could permit or prevent the mining in certain places, give or take wealth.

"The Copper Mountain" is the Gumyoshevsky mine, the oldest mine of the Ural Mountains, which was called "The Copper Mountain" or simply "The Mountain" by the populace. It is now located in the town of Polevskoy, Sverdlovsk Oblast. In some regions of the Ural Mountains, the image of the Mistress is connected with another female creature from the local folktales, the Azov Girl (Russian: Азовка, tr. Azovka), the enchanted girl or princess who lives inside Mount Azov.
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The Mistress of the Copper Mountain became a well known character from her appearance in Pavel Bazhov's collection of the Ural Mountains folktales (also known as skaz) called The Malachite Box. The Mistress appears in the third skaz, "The Mistress of the Copper Mountain", and in 9 other stories from the collection, including "The Stone Flower", "The Manager's Boot-Soles", and "Sochen and His Stones".

It really does

The maps, or the creatures?
Maps are @snowbeast's speciality, but I'll be covering the creatures eventually, possibly after the Slavic folklore, also, while British/Irish folklore is technically Northern European folklore, it's so
plentyful it deserve its own spot