This sprawling ancient metropolis in the jungle of Ecuador has revealed a unique form of urbanism. The BBC visits the site for the story of this mysterious civilisation.
Archaeologists say a second oven has been unearthed, suggesting it was a busy hub producing cloth.
People who turn up in fancy dress will get free admission to the event.
Calum Stott says it is the "mystery, folklore and research" of stone lifting that fascinates him.
The gold piece is said to be the first object of its kind found in Britain in almost 30 years.
Caskets containing the 900-year-old skeletons will be laid to rest in a private ceremony this week.
Archaeologists want to better understand the site before it is lost to sea.
Experts say it could be the largest hoard of Roman silver coinage known from Devon in recent times.
Archaeologists send a drone down a medieval well on the site of a £15m regeneration project.
