Wikipedia
Hiis
Hiis is a commune in the Hautes-Pyrénées department in south-western France.
Hiis (sacred site)
A hiis is a term in Estonian native faith used to denote a sacred natural site. It can be a sacred grove, a boulder, a mountain, a single tree or any other natural outstanding geographical feature.
Hiises have been target of destructive acts led by Christian missionaries who depicted them as demonic or pagan entities.
Etymology: It is not sure how the word is related to Hiisi.