Zac EfronHe has come far since singing in East High’s halls.

Here’s a teaser trailer for an Australian survival thriller movie. All things goldJanuary 31, 2011, dropped a gritty, rough version of the High School Musical alum. This clip shows the actor, aged 34, barely recognisable.

Efron shared the teaser via Instagram, and was candid about what it was like being on set.

“Filming this was brutal— but I love this [s–t]He wrote, “Thank you,” Thank you for all your support and I am so proud of everybody involved.”

Efron is a desert drifter who finds a huge gold nugget. His partner leaves to search for excavation equipment. However, Efron stays behind to protect the gold. He endures a number of hardships that test his physical and mental endurance.