A bleeding man who was bashed in a Melbourne park managed to stumble down a road for nearly a kilometre until he reached his parents' house.
The 38-year-old is now recovering in hospital from severe head and facial injuries after his parents heard him collapse on their front doorstep.
Police say the unprovoked and random attack, which occurred last Sunday, left a trail of blood about a kilometre long as the man staggered through the city's south.
"It's absolutely brutal and vicious," Detective Leading Senior Constable Ric Anderson said of the attack.
"If he hadn't have been able to raise the alarm, it certainly could have been life-threatening."
The man remembers hearing someone rapidly approaching from behind before he was struck in the head with a blunt object.
He saw a small, white vehicle parked at nearby tennis courts in Roy Dore Carrum Reserve prior to the attack and also seeing two women in the front of the car carrying torches.
Police say nothing was stolen and there's no known motive for the bashing.
His attacker said nothing before fleeing.