First teaser for Lord of the Rings: The Hunt for Gollum is hiding a 'precious' message, but you'll need to be a Tolkien expert to decipher it

The Lord of the Rings: The Hunt for Gollum has officially started production, marking the occasion with a unique teaser – and a hidden Middle-earth message.

As you can see above, the first day of filming sees director and Gollum actor Andy Serkis stride onto an interior stage in – what else? – a motion-capture suit.