Police are piecing together the events surrounding the death of a woman in Christchurch overnight on Sunday.
Rosalie Anderson-Hill, 21, was found near Summit Road in the Heathcote Valley.
Detective Senior Sergeant Damon Wells said the death was being treated as unexplained.
They would like to speak with anyone who was near the Cattlestop Crag climbing rock area on Sunday, or saw the woman walking in the Mt Pleasant, Lyttelton or Summit Road area overnight on Sunday through to early Monday morning.
The woman was about 160cm tall, had dreadlocked blonde hair, was wearing a dressing gown with a hood, and may have been carrying a black Globe-brand longboard.
Police have yet to find the longboard, which is about 1m with a slight dip in the middle.
Anyone with any information can call police on 105 and quote file number 201026/8376 or anonymously through Crimestoppers on 0800 555 111.