Rest assured, this video is not of a tsunami or an apocalyptic event, but it should come with a disclaimer.

This viral footage of a surfer breaking a world record for riding a monster wave actually captured history in the making.

According to the World Surf League, Brazilian surfer Rodrigo Koxa broke the world record for the highest wave ever surfed, during a session in Nazare, Portugal.

The 38-year-old set the new record riding an 80-foot (24 meter) wave in November 2017.

How exactly did a behemoth wave form in the North Atlantic Ocean? This is where things get interesting...

The jaw-dropping 80-foot wave is believed to have come from a hidden, underwater canyon.

According to Live Science, Sharon Gilman, a biological oceanographer at Coastal Carolina University in South Carolina, says that the high walls of a canyon can amplify ripples into massive waves.

This isn't the first time a behemoth canyon wave was captured on the coat of Nazare.

The previous record-breaking wave, which was 78 feet tall, was surfed, but it ended up injuring both surfers and beachgoers.

That being said, that hasn't kept daredevils away.

The viral footage is making the rounds on the internet again after the popular Twitter page, Massimo, shared the video on Sunday.

The post currently has almost 50,000 likes and 30,000 retweets.

Watch the full video below, where you can see footage from behind and in front of the wave!

If you're shocked by what you just saw, you're not the only one! These Twitter reactions are very relatable.

Can you imagine standing beside a wave this high?

[H/T: Live Science]