Snowdon: Artists create dark skies mountain light show
Circus performers and students have come together to create a light show on Snowdon using special torches.
The work saw 50 people armed with wireless colour-changing LED lanterns called "geolights".
Their performance, part of the Green Space Dark Skies project, was then choreographed on the mountainside.
It was filmed and will be shown on the BBC's Countryfile show in October.