One part of “Celestrial Texts – Heavenly Tweets” by Laine Hogarty is seen as part of the “Hidden” annual sculpture exhibition at Rookwood Cemetery on September 15, 2014 in Sydney, Australia. Located in the suburb or Rookwood in Western Sydney Rookwood cemetery is the largest necropolis in the southern hemisphere. The Annual “Hidden” exhibition features works by local artists. (Photo by Mark Kolbe/Getty Images)

“Regeneration” by Rona Sissons is seen as part of the “Hidden” annual sculpture exhibition at Rookwood Cemetery on September 15, 2014 in Sydney, Australia. (Photo by Mark Kolbe/Getty Images)

“Missing” by Thomas Quayle is seen as part of the “Hidden” annual sculpture exhibition at Rookwood Cemetery on September 15, 2014 in Sydney, Australia. (Photo by Mark Kolbe/Getty Images)

“Come in No.46, your time is up” by David McGuinness is seen as part of the “Hidden” annual sculpture exhibition at Rookwood Cemetery on September 15, 2014 in Sydney, Australia. (Photo by Mark Kolbe/Getty Images)

“Warhorse Metamorphosis” by Adam Galea is seen as part of the “Hidden” annual sculpture exhibition at Rookwood Cemetery on September 15, 2014 in Sydney, Australia. (Photo by Mark Kolbe/Getty Images)

“Untitled” by Ron Royes is seen as part of the “Hidden” annual sculpture exhibition at Rookwood Cemetery on September 15, 2014 in Sydney, Australia. (Photo by Mark Kolbe/Getty Images)

“Two Figures and a Sea Mine” by Stephen Harrison is seen as part of the “Hidden” annual sculpture exhibition at Rookwood Cemetery on September 15, 2014 in Sydney, Australia. (Photo by Mark Kolbe/Getty Images)

Visitors walk towards “Two Figures and a Sea Mine” by Stephen Harrison at Rookwood Cemetery on September 15, 2014 in Sydney, Australia. (Photo by Mark Kolbe/Getty Images)

“Above and Below” by Sue Callanan is seen as part of the “Hidden” annual sculpture exhibition at Rookwood Cemetery on September 15, 2014 in Sydney, Australia. (Photo by Mark Kolbe/Getty Images)

“Memory Wave” by Ally Adeney is seen as part of the “Hidden” annual sculpture exhibition at Rookwood Cemetery on September 15, 2014 in Sydney, Australia. (Photo by Mark Kolbe/Getty Images)

“Anibus, Who is a Very Good Dog, Waits for His Master, Who is Never Coming Back” by Kuba Dorabialski and Katy B. Plummer is seen as part of the “Hidden” annual sculpture exhibition at Rookwood Cemetery on September 15, 2014 in Sydney, Australia. (Photo by Mark Kolbe/Getty Images)

“Girt By Sea” by Jane Theau is seen as part of the “Hidden” annual sculpture exhibition at Rookwood Cemetery on September 15, 2014 in Sydney, Australia. (Photo by Mark Kolbe/Getty Images)

“Hesitation” by Peter Tilley is seen as part of the “Hidden” annual sculpture exhibition at Rookwood Cemetery on September 15, 2014 in Sydney, Australia. (Photo by Mark Kolbe/Getty Images)