New series Iolo’s Pembrokeshire starts tonight (Monday) on BBC One Wales at 7.35 pm which sees wildlife expert Iolo Williams take viewers on a personal guide of some of Pembrokeshire’s hidden gems, exploring wildlife and scenery along the way.

Filmed in an area renowned for its epic scenery, rugged coastline and offshore islands, Iolo’s Pembrokeshire: The Wild West is a treat for the eyes.

In episode 1, his tour starts in spring at Slebech Park, an 18th century country estate set along the tidal shores of the Cleddau river. With a mix of arable land, river banks and wooded areas, it’s the perfect place to discover flora and fauna.

Walking in the sunshine, in woodland surrounded by butterflies and bluebells, Iolo is in awe of mother nature, commenting: “There is nothing but me, a sea of blue and birdsong. It’s just absolutely stunning.”

In the shadow of Wales’ biggest refinery, on the shoreline of Milford Haven waterway, wildlife has transformed a former oil storage facility, tucked away from public view. It’s been 50 years since the tanks were removed, and the site - about the size of 25 rugby pitches - is now a haven for plants and insects.

Amazed by the variety of species there, Iolo said: “It’s wonderful to see so much wildlife in this old industrial site – and it goes to show that if you leave a place alone long enough, nature will move in.”

Along the coastline, where the vegetation is sparse, Iolo discovers snakeskin. Adders, with their distinct zig-zag pattern, have lost a lot of habitat in recent years, and Pembrokeshire’s coastal edges are vitally important for their survival. Iolo goes searching for clues in an area full of gorse, heather, brambles and bracken.