Note: A person watching the collapse uses some colorful language near the end of the video. Earphones recommended.

On Sept. 1, the Oregon States Park agency memorialized Cape Kiwanda's famous "Duckbill" rock formation on Facebook after officials found it to be a pile of rubble. They called the collapse a "a sobering reminder of the ever present dangers of our fragile coastal rocks and cliffs."

It turns out that it was actually a sobering reminder of human beings' disregard for nature.

On Aug. 29, David Kalas filmed a group of men intentionally pushing on the rock formation until it crumbled onto the ground. "I kind of laughed to myself," Kalas told the Oregonian. "I thought there was no way that they could knock it down, but then I noticed that it started wobbling." Kalas began filming at that point and captured the Duckbill's toppling in a Twitter video.

Kalas confronted the group afterwards about why they did this, and the men claimed the rock was a "safety hazard" after a friend of theirs had broken their leg on the rock.

The event is reminiscent of a 2013 incident in which three Boy Scout leaders were filmed destroying a similar rock formation in Utah's Goblin Valley State Park. Those men received a year's probation and fines as punishment.

Vandals destroy famed 'Duckbill' rock formation
The iconic Cape Kiwanda rock had survived centuries of erosion but could not survive three humans pushing on it.