Conor McGregor wrote that he’s “beyond dark here” and that he can “only describe it as hell” in a somber X post following his brutal knee injury at UFC 329 on Saturday night at T-Moblie Arena in Las Vegas.

On his first official attempt at a kick in his first UFC fight since 2021, McGregor slipped and appeared to injure his right leg, and his fight against Max Holloway ended after just 69 seconds.

“My head gasket is gone,” McGregor wrote on social media early Sunday morning. “Destroyed. I had no injury / injuries going into the fight. I was throwing kicks, planted and jumping, all throughout camp as well as backstage before the fight. This came out of nowhere.”

McGregor’s post occurred just over an hour after he bolted from T-Mobile Arena barefoot — and after declining a request from Paramount Plus for an interview — following his loss.

Dana White, the president and CEO of UFC, said they’re assuming that McGregor, 37 blew out his ACL, and McGregor’s post confirmed reporting from The Post’s Erich Richter that the injury didn’t occur before the fight — despite what speculation on social media, and a viral clip, suggested.

“If there was a preexisting injury somebody would have noticed,” White told reporters, according to The Athletic.

McGregor, whose bout — and return — served as the main event Saturday night, took five years before returning to the ring this time, and it’s unclear when, after this injury, his next fight might be.