A man died when he was buried under tons of earth as he dug for old bottles on a building site.
Brian Spink, 46, died in a "prospecting hole" at a former haulage depot in Murton, County Durham, on Sunday.
Married Mr Spink, who lived locally, was trapped in the 2ft deep hole when soil from an embankment collapsed.
A Durham Police spokesman said it appeared to be a "tragic accident" and said it should act as a warning about the dangers of building sites.
Insp Peter Foster said officers arrived at the scene to find a partially buried body.
Firefighters were brought in to help remove Mr Spink's body from the hole.
Insp Foster said: "Mr Spink had entered the site on foot and made his way to an area which is believed to have been the area of a Victorian rubbish dump.
"It is apparent that Mr Spink had been prospecting for old glass bottles in a hole at the edge of the site."
The Health and Safety Executive visited the site and later returned it back to the developers.
The development site on a former haulage yard is close to the Dalton Park shopping centre. Police said the site has "active security".
A report is being prepared for the local coroner.