A giant map of Wales the size of the Principality Stadium is to be installed on the side of Pen y Fan today.
Hundreds of volunteers will move and dance across the map to create shapes on the map this afternoon.
The event is to launch the Get Creative Weekend and the mass participation event on Pen y Fan, which will be filmed by a drome, is organised by Brecon’s Theatr Brycheiniog, the BBC and the Arts Council of Wales working with the Brecon Beacons National Park.
The mountain is this morning half covered by cloud but organisers will be hoping they clear and the bright blue skies that have marked this week’s fine weather will return.
Over the past two days organisers have been installing a vivid outline of a map of Wales on the side of the mountain using temporary material which will be removed on Monday.
The outline will frame the images used in the piece as participants trickle down from the top of Wales; creating a heart shape which will begin to beat, this will then transform into a moving map of the A470, before ending in the creation of the words Get Creative and Cer I Greu.
The event is co-ordinated by choreographer Phil Williams. He said: "I’m excited to create Heart of Wales, bringing the communities of Wales together for a mass participation arts event on the side of Pen Y Fan. "Creating a large scale installation of bodies in motion, we will literally be moving the mountain in what promises to be a spectacular event."
Get Creative is a campaign to celebrate and support the everyday creativity happening in homes and public spaces. Creative organisations across Wales are opening their doors with a series of free events to fire the imagination.