Daredevil Alex Harvill -- a famous motorcycle stuntman -- died Thursday after crashing during a world-record jump attempt.
He was just 28 years old.
The scene was absolutely horrifying ... Harvill was trying to launch his bike off a ramp 351 feet at the Moses Lake Airshow in Washington -- when he came up short and crash-landed into a dirt mound.
Harvill was thrown over his handlebars, and tumbled dozens of feet before he finally came to a stop.
According to the Grant County Sheriff's Office, Harvill later died from the injuries he suffered during the accident.