Divers and a search dog organisation involved in the hunt for a 17-year-old who disappeared last week are meeting to discuss their next steps.
Robert Marshall, from Llandudno, went missing from Ogwen Bank caravan park, near Bethesda in Gwynedd, after saying he was going to walk home.
Divers, police and the Ogwen Valley Mountain Rescue team have so far failed to locate him.
There have been no sightings but North Wales Police are still investigating.
Robert was last seen by his brother at 2230 BST on 1 June after having a few drinks at the caravan park's club.
A full-scale hunt for the teenager, including a search of the river which runs alongside the holiday park, took place over the weekend
Police have confirmed that Robert, who was staying with his mother, grandmother and brother, left without his wallet or mobile phone, which he had lost earlier that day.
'Out of character'
Detective Chief Inspector John Clayton said Robert had told his brother he wanted to return home to Llandudno to get in touch with a girl from another part of the country whom he had met over the internet
"We're checking his computer but he has not made contact with the girl," said the officer.
"Robert's disappearance is completely out of character. He's a completely normal, happy-go-lucky lad, but without any firm sighting of him I cannot presume he has come to any harm.
Officers were taking the view that having had some alcohol he could have wandered off into Snowdonia, he added.
Posters of Robert have been put up at caravan parks in Snowdonia in the hope that visitors may have spotted him.
The teenager is described as 5ft 10in tall and stocky, with short dark hair. He was wearing a light blue hooded top, black tracksuit bottoms and white trainers.
Anyone who may have seen Robert or an someone matching his description is asked to contact their local police station or North Wales Police on 0845 607 1002 (English) or 0845 607 1001 (Welsh).
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