Chris Hemsworth might be the hammer-wielding God of Thunder, but even he is no match for Mother Nature.

The Thor actor made on appearance on Jimmy Kimmel Live! on Thursday, during which he revealed that he nearly died during a vacation with his wife, Elsa Pataky, in the Himalayas.

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Hemsworth, 32, said that Pataky was doing a travel show and he decided to tag along with his wife and climb one of the peaks of the highest mountain range in the world.

"She was doing a travel show and I was her plus one. We got higher and higher and we ended up at about 4,000 meters (13,123 feet) above sea level," Hemsworth, 32, told Kimmel.

The actor revealed that for such a trek, one is required to acclimate themselves and get used to the low oxygen levels as you make your way up the mountain.

"You acclimate every couple of days. You plant yourself in one place and your body adjusts to that lack of oxygen and so on, and you go higher and higher," he said.

"Have you ever heard of altitude depression?" he asked the talk show host. "I got that."

"I slowly started to lose [his] mind," Hemsworth said, to the point that he started becoming "irrational" and "overly sensitive" to "the most trivial, silly things."

Hemsworth said that his breathing worsened and he started to sound like a combination of "Darth Vader" and "Daffy Duck" before Pataky noticed something was not right and alerted the guards.

"They come in, take one look at me and say 'get him off the mountain," he added. "And they start injecting me with all sort of whatever's going to adjust my oxygen intake. Apparently, the oxygen in my lungs, the next stage was oxygen in my brain and then - goodnight. We wouldn't be sitting here. Everyone else adjusted, acclimated, but for some reason I couldn't handle it."

TagsChris Hemsworth, Chris Hemsworth Himalayas, Chris Hemsworth Jimmy Kimmel, Jimmy Kimmel Live!, Jimmy Kimmel, elsa pataky, Chris Hemsworth Elsa Pataky