09/28/2013 at 09:00 AM EDT
He recently faced an uphill battle
in his personal life. And now, Zac Efron
is ready to take on a mountain. Literally.
The actor, 25, is speaking out for the first time since news broke that he had completed a stint in rehab
five months ago in an attempt to end his partying lifestyle
On Friday, Efron posted a photo on his Instagram page
showing him high atop the Peruvian mountains, flanked by the famous ruins of Machu Picchu.
"Hey guys! Just returned from an incredible trip to Peru with my dad and wanted to thank you all for your support these past few weeks...means the world to me. Love you guys!" he wrote.
Efron recently surfaced at the Toronto Film Festival to help promote his new film Parkland
, a drama about the Kennedy assassination, and a source told PEOPLE that the actor is "doing great," adding: "He's taking care of himself and it shows."