Helvettre
Helvettre (also known as Helvite or the Otherworld) is a concept from Swedish folklore referring to a parallel realm that exists alongside the human world, invisible to most people except at certain times and places. This otherworld is inhabited by the souls of the dead, ancient giants, and the hidden folk (vitter) who retreated from human society as civilization spread across the Scandinavian landscape. The concept is deeply rooted in Norse and Swedish folk beliefs about the multilayered nature of reality, where the boundaries between worlds are thin at specific locations such as burial mound