Whoever thought it was a great idea to hold a press conference for "The Hangover III" on a peak near Brazil’s famed Sugarloaf Mountain clearly forgot to check in with Zach Galifianakis first.

The 43-year-old comedian apparently has a serious fear of heights and refused to travel by cable car 220 meters up to the top of Morro da Urca in Rio.

“Zach was too afraid to ride up,” a rep for Warner Bros. told Gossip Cop. “Zach is afraid of heights, and called into the press conference to let participants know, and made a few jokes.”

While "The Hangover III" has been getting absolutely slammed by critics, Galifianakis himself has been personally on a roll when it comes to healthy living. During an interview with Conan O'Brien earlier this month, he said he "was getting into too much trouble with the drinking" and, after a particularly scary incident, he decided to give it up altogether. As a result, he's lost some weight and has managed to avoid further "Hangover"-esque moments.

And let's not forget about his 60-acre private farm in the mountains of North Carolina. In past interviews, the actor has praised this piece of earth as a personal retreat away from the crazy of Hollywood.

"Seriously, my farm is a place that I get to think clearly and pretend to know what I am doing," he told Vanity Fair in 2009. "I love to learn about farming. I like to play with the earth and dirt. My blueberries that we planted will soon start blooming and their rebirth gives me such a good feeling inside. I will make blueberry biscuits this summer."

Check out his appearance on Conan's show below.

Michael d'Estries ( @michaeldestries ) covers science, technology, art, and the beautiful, unusual corners of our incredible world.

Zach Galifianakis avoids mountaintop 'Hangover III' event
Comedian reportedly has a tremendous fear of heights.