since time immemorial

US /sɪns taɪm ɪmɪˈmɔːriəl/
UK /sɪns taɪm ɪmɪˈmɔːriəl/
"since time immemorial" picture
1.

sinds mensenheugenis, sinds onheuglijke tijden

for a very long time, for a period longer than anyone can remember

:
The tradition has been passed down since time immemorial.
De traditie is overgeleverd sinds mensenheugenis.
People have been fishing in this river since time immemorial.
Mensen vissen al sinds mensenheugenis in deze rivier.