Ian Smith, a student at Colorado State University, is in critical condition after a Saturday-afternoon stunt went horribly wrong. It was then that Smith tried to jump from a three-story apartment complex and into the pool below. He missed, breaking his ankles, heels, and several vertebrae in his back, according to KUSA-TV in Denver.

Shocking video of the incident has surfaced showing the entire thing.

CSU Student Jumps From Roof and Misses

CSU Student Jumps From Roof and Misses

CSU Student Jumps From Roof and Misses

CSU Student Jumps From Roof and Misses

Once Smith hit the concrete, he rolled into the pool as blood spilled on the ground. Bystanders eventually pulled him out and paramedics said he was lucky to be alive.

“You could hear him hit it, and just kinda rolled into the pool,” Jared Roberts told KUSA.

“Ugh, it definitely made me sick,” Brittany Polliard, who witnessed the jump, added.

Witnesses say some were encouraging Smith to jump while others were discouraging it. It’s unclear if alcohol was a factor, but people were drinking and lounging pool side.

You can watch the KUSA news report below, which includes the accident footage:

(H/T: Daily Mail)