Butterflies and orchids now fill a piece of land in Pembrokeshire that was once home to an oil refinery.
But because the site remains fenced off, the public are unable to experience for themselves what is now a beautiful nature haven.
Found on the shoreline of then Milford Haven Waterway, overlooking Angle Bay, the former site of the Pembroke Valero Oil Refinery, called Kilpaison Bunds, is now bursting with natural life.
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What was 50 years ago a hectic, busy industrial oil storage area has been taken over by nature as butterflies, birds and a variety of plants enjoy the space, which is large enough to fit about 25 rugby pitches.
Nature observer and presenter Iolo Williams - who has previously spoken out about 'our beautiful Welsh countryside becoming a green desert' - explores this wildlife haven for his new BBC One Wales series, Iolo’s Pembrokeshire, The Wild West.
Iolo introduces the area as “a great place, not for the big things but for the little things".
The bunds, which are large banks that used to hold the 14 oil storage tanks, are now alive and teeming with plants and insects, including butterflies.
The rare Silver Studded Blue butterfly has made its home in what remains of the old oil site which Iolo describes as a “real local stronghold for them” as the adult butterflies do not often leave their patch.
Different variations and colours of orchids also grow in some of the smaller bunds, ranging in beautiful shades of pinks and purples, alongside the occasional white.
Iolo said: “I am not a botanist, I like my plants, I am no expert not by a long mile but look at this, I do like orchids.”
Variations include the Southern Marsh orchid that spans across the previously unnatural, man-made site in their hundreds.
Nature has moved in and made a glorious comeback in this part of Pembrokeshire.
Iolo says: “You find somewhere like this which 50 years ago would have been a huge tank full of oil… and it has been left to go wild and it really has gone willd. It is amazing, it sort of restores your spirit.”
Also included in the first episode Iolo shows viewers Slebech Park Woods, which is covered in bluebells and inhabited by badgers and St David’s Peninsula, in the far west of Pembrokeshire.
The peninsula is another place for rarer animals to make their homes with the White Throat bird species coming there from the Sahara Desert and adder snakes also able to make their home there.
Both the White Throat bird and adders love the rocky terrain that is made up of shrubs, heather, bracken, and gorse. These animals often struggle to find landscapes like this in Wales as more land like this is lost.
Iolo said: “There are not many areas left like this in Wales, but this is really really good for them.”
Iolo’s Pembrokeshire, The Wild West, airs on BBC One Wales on Monday, July 5 at 7.30pm and will be available to watch on iPlayer.
