Analysis of information sources in references of the Wikipedia article "West Kill" in English language version.
The lower slopes of the outer Catskills were hunting grounds and not year-round residences through a thousand years and more of Indian life ... The Indian's physical connection with the Catskills was never great ... Indians were animists—they believed that all parts of the universe and everything in it possessed souls ... they lived at a stage of human development where a mountain may be a kindly mother or a relentless enemy—while still remaining a mountain ... No record remains of how the Catskills looked to the Indians or what part they played in the Indian understanding of life ... But we know beyond doubt of certain roles which the mountains played in the world of the Indians around them. One of them was as a barrier first between groups of Indians differing in language and customs