Trolls are a part of the ancient heritage of the Scandinavian mythology. All around the country, strange lava formations were once explained in folktales as trolls who were turned to stone when caught outdoors in daylight. Trolls are human-like in form, they are still inhumanly strong, huge and ugly. Trolls are very often thought to be fearsome and cruel creatures. But they often treat people as they are treated and they return favors for favors, exerting vengeance if harmed. Trolls live in mountains, caves and cliffs, especially bird cliffs. Like humans, they live together socially. They fish, cultivate land and keep animals. They are also very good at handicrafts and hold feasts.