What is "kay-nah-chi-wah-nung"

Kay-Nah-Chi-Wah-Nung National Historic Site of Canada, or Manitou Mounds, Canada's premier concentration of ancient burial mounds. Manitou Mounds National Historic Site, as it was once called, is a vast network of 30 village sites and 15 ancient burial mounds constructed from approximately 5000 BP to 360 BP which is one of the "most significant centres of early habitation and ceremonial burial in Canada." It is located on a river stretch known as Long Sault Rapids on the north side Rainy River approximately east of Fort Frances, in the Rainy River District of Northwestern Ontario, Canada off highway 11. It was designated as a National Historic Site of Canada in 1969.