A tramper has been rescued after spending a freezing night in Marlborough bush.
The 25-year-old man injured his ankle while on a day tramp up Mt Riley in Mt Richmond Forest Park.
He managed to find a spot with cellphone coverage and called his friends for help.
His friends relayed his location to police at 8.20pm yesterday.
Blenheim police deployed two land search and rescue teams, who found the man about 4am today.