It’s been 27 years since James Cameron shot his iconic Titanic blockbuster, which for a time was the highest-grossing movie ever, having grossed over $2.2 billion to date.

And now previously unseen behind-the-scenes photos from the 1996 Mexico set have surfaced.

These candid snaps of the director, fresh-faced Leonardo DiCaprio, Kate Winslet and others were taken by an unknown member of the cast.

Check out the shots below, including scenes from the embarkation of the doomed vessel, which are set to auction with Henry Aldridge & Son.