The First Nation is also pursuing a land claim in its traditional territory in the northwestern corner of British Columbia.

In 1999, the mummified remains of a man were found by a group of hunters in a glacier in Tatshenshini-Alsek Park in British Columbia, Canada.

Their representatives visited the site and named the body as Kwäday Dän Ts'ìnchi, "Long Ago Man Found" in their language of Southern Tutchone.

In 2007, mitochondrial DNA testing of 241 area volunteers of the Champagne and Aishihik First Nations revealed 17 living persons who are related to Kwäday Dän Ts'ìnchi through their direct maternal line.

[3] As arranged by the Champagne and Aishihik First Nations, after the tests they had the remains of the man cremated and buried with ceremony near where they were found in Tatshenshini-Alsek Park.