31-year-old Charles Porter has been convicted of attempted aggravated sexual abuse and abusive sexual content.
In April of 2020, Porter entered a cabin in the employee housing area of the national park.
He then tried sexually assaulting a man who was sleeping.
The victim started screaming and neighbors rushed in to help him.
Porter will be sentenced in July.
He's facing a possible life sentence and a $250,000 fine for the attack.