The Yellow Wiggle, Emma Watkins, has donated $20,000 to ensure a Yolngu sign language book can hit the printing press by the end of the year to keep the ancient Australian aboriginal language alive.

Ms Watkins personal passion for deaf services compelled her to donate to the 25 year project to ensure the globally rare language could be preserved and studied for generations..

Once published, the Yolngu sign language directory will be comprised of photography and printed in both Yolngu and English.