This looks like the underground dwelling of the Tuatha de Danaan, or "Children of Danu", the mythological mother goddess of the Irish Celts. Creatures such as leprechauns and other Fairy Folk were known to inhabit these places, particularly under the burial mounds, which were also known as the fairy mounds for that reason.
Kids activities and family activities around Revelstoke, BC, Canada. 350+ fairy tale figurines, structures and BC's tallest tree house! Interpretive nature walk, paddle boat and seasonal salmon run. BC attractions for all the family!