Tanacross is an Athabascan language of Alaska.
Though it was once considered a dialect of Lower Tanana,
this was in fact an error--the two languages are more distinct than English and German are, and the only reason some
speakers could understand each other in the first place was regional bilingualism. Tanacross is a highly endangered
language spoken by only a few dozen elders today, but some young Tanacross people are working to keep
their ancestral language alive.