The North West Rail Link team needs your help to name another tunnel-boring machine.
Rouse Hill Anglican College student Alexandra Marshall won the rights to name one of the four machines that will be used in the $8.3 billion eight-station link after entering a competition.
She called it Elizabeth, after prominent colonial pioneer Elizabeth Rouse (pictured).
READ MORE: Click here to read more about 'Elizabeth'.
"With Elizabeth due in the ground at Bella Vista [Station] in October, it's time to now turn our attention to naming her colleague," Transport Minister Gladys Berejiklian said of the second machine that will go in the ground by the end of this year.
She said that on major tunnelling projects around the world, underground workers look to Saint Barbara for protection and, because of that, machines that work underground have traditionally been given female names.
Like the competition to name Elizabeth, this competition has the theme, "Women who have made a positive contribution to life in Sydney".
The winner will also be taken on an exclusive behind the scenes tour of the tunnel-boring machine and tunnelling site off Celebration Drive, Bella Vista.
The community would also name a third machine. The fourth will be named by tunnel workers.
■ Details on the North West Rail Link Facebook page.