Naturally, fans went wild for Zac's snaps.
"This is the sweetest thing I have ever seen since the Troy and Gabriella moment on the tree house," one High School Musical enthusiast penned.
"I’m not crying. You’re crying," remarked another.
"You can't just drop pictures like that on us, Zac! We need a warning," a third noted.
Earlier this month, Zac confirmed that filming for Down to Earth season two had kicked off.
In the photos, the actor can be seen participating in a Welcome To Country ceremony lead by an Aboriginal Elder with wellness expert, Daren Olien.
"Here we go- Down to Earth season 2!" he captioned his photos.
The show follows Zac and Daren travel around the world to learn more about sustainability when it comes to food, water and energy.
On a personal note, Zac is keen to call Australia his permanent home and has found love with girlfriend Vanessa Valladares. The two met while she was working at The Byron Bay General Store in June 2020.
“Zac’s loving his life in Australia,” a source told Us Weekly. “He’s very happy with his girlfriend. It’s serious,” they added.
But the Greatest Showman actor spoke about his love for the country back in 2017.
“I’ve fallen in love with Australia. I love the people, the culture and the beach,” he said in an interview at the time.