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The committee also says nature-based climate measures - including tree planting and peatland restoration – could contribute to 13% of emissions reductions by 2045.

"The hills look burnt," he said, adding that peatland, usually wet and boggy, "is now crunchy" underfoot.

The committee also said the Welsh government will need to support farmers and rural communities to "diversify their income" away from livestock farming and towards woodland creation and peatland restoration.

"You lose a bit each time and the mountain becomes more and more impoverished, more and more grassland like and less and less wet peatland like," he added.

The film documents his journey working with NatureScot's Peatland Action team to raise awareness of the need to restore peatland.