Val Kilmer’s personal home movies have been transformed into a documentary that will premiere at this year’s Cannes Film Festival.

Throughout his career, the actor has amassed hundreds of hours of film and videotape that were stored in boxes stacked up in a garage, The Hollywood Reporter revealed on Monday. It features footage the 61-year-old made as a child with his brothers Mark and Wesley while growing up in the Los Angeles suburb of Chatsworth.

According to the outlet, Wesley, known as the director among the trio, passed away weeks before Kilmer became the youngest person at the time to