PREVIEW: Epic Wales, Channel 4

This brand-new series celebrates the people who live and work in and around the remarkable landscapes of Wales's three National Parks; from the jagged heights of Snowdonia in the north, through to the mountains and moorlands of the Brecon Beacons and the wild and rugged coast of Pembrokeshire.

These places are not just a playground for tourists and adventurers, they're also home to more than 80,000 people. Among them are families who have been here for generations and others who arrived just a few months ago.

But all of them are proud to call their little piece of Wales 'home'. Upland sheep and cattle farmer Rhodri Jones has lived near Bala on the southern side of Snowdonia National Park for 43 years. With lambing looming, this is one of the busiest times of the year - but an unexpected April snowfall on the mountain makes caring for his pregnant ewes even more challenging.

In the small seaside town of Dale, at the western tip of the Pembrokeshire coast, Mark Gainfort - the last in a long line of fisherman from the tiny port - embarks on his first trip of the season, laying out his lobster pots and later reeling in the catch, which he sells directly from his boat on the quayside. In the Brecon Beacons, at Carreg Cennen Castle, friends Alex, Ben and Will have combined their twin passions - climbing and castles - to carry out conservation work on exposed ancient buildings.

They effortlessly abseil down the castle's medieval walls, hacking back the overgrown ivy that threatens the masonry, and take in a unique view of the surrounding hills. Finally, father-and-daughter team Dave and Emily Haigh take a step back in history with a stunning trip through the spectacular Vale of Ffestiniog on the Welsh Pony - a steam engine that's swapped the slate that it used to carry, for tourists.