Blue Lagoon

Sea, Estuary, Creek in Pembrokeshire

Wales

Blue Lagoon

A grey day at the Blue Lagoon The Blue Lagoon to the north of Abereiddi Bay doesn't look too inviting on an overcast day. A former slate quarry with its seaward wall breached to form a small deep bay.
A grey day at the Blue Lagoon Credit: E Gammie

Blue Lagoon, located in Pembrokeshire, Wales, is a stunning coastal feature known for its picturesque sea, estuary, and creek. Situated within the scenic village of Abereiddy, this natural wonder offers visitors a unique and captivating experience.

The Blue Lagoon gets its name from the vibrant blue color of its waters, which are a result of the surrounding slate cliffs and the reflection of sunlight. The sea here is crystal clear, allowing for excellent visibility of the diverse marine life that inhabits the area. Snorkeling and diving enthusiasts are particularly drawn to this spot due to the rich underwater ecosystem and the submerged wreckage of an old slate quarry.

Connected to the sea, the estuary at Blue Lagoon provides a peaceful and sheltered area for visitors to enjoy. The calm waters make it ideal for swimming, kayaking, and paddleboarding, attracting water sports enthusiasts of all levels. The estuary is also home to a variety of bird species, making it a popular spot for birdwatchers.

Tucked away within the cliffs, a small creek can be found at Blue Lagoon. This hidden gem offers a tranquil setting, perfect for those seeking solace and relaxation. Visitors can take a leisurely stroll along the creek, immersing themselves in the surrounding natural beauty.

Blue Lagoon, Pembrokeshire, is a true paradise for nature lovers and adventure seekers alike. Its captivating sea, estuary, and creek offer a range of activities and breathtaking scenery, making it a must-visit destination for anyone exploring the stunning coastline of Wales.

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Blue Lagoon Images

Images are sourced within 2km of 51.937881/-5.2090659 or Grid Reference SM7931. Thanks to Geograph Open Source API. All images are credited.

A grey day at the Blue Lagoon The Blue Lagoon to the north of Abereiddi Bay doesn't look too inviting on an overcast day. A former slate quarry with its seaward wall breached to form a small deep bay.
A grey day at the Blue Lagoon
The Blue Lagoon to the north of Abereiddi Bay doesn't look too inviting on an overcast day. A former slate quarry with its seaward wall breached to form a small deep bay.
Make Hay. Pwll-caerog, looking across the fields from the Pembrokeshire Coast Path.
Make Hay.
Pwll-caerog, looking across the fields from the Pembrokeshire Coast Path.
Aber Pwll
Aber Pwll
Abereiddy Tower Situated on the Trwyncastell headland to the north of Abereiddi Bay. This tower, of uncertain usage (local information board suggests possibility of it being a meeting place for directors of the now defunct Abereiddy Slate Mine, or their ladies), lies just off the Pembrokeshire Coastal Path and gets comparatively few visitors. This is possibly because a "scramble" is required to access the headland, as coastal erosion is steadily severing the headland's link with the main peninsula.
Abereiddy Tower
Situated on the Trwyncastell headland to the north of Abereiddi Bay. This tower, of uncertain usage (local information board suggests possibility of it being a meeting place for directors of the now defunct Abereiddy Slate Mine, or their ladies), lies just off the Pembrokeshire Coastal Path and gets comparatively few visitors. This is possibly because a "scramble" is required to access the headland, as coastal erosion is steadily severing the headland's link with the main peninsula.
Abereiddi Bay
Abereiddi Bay
Cerrig Gwylan From a Lichen-encrusted Mainland These two rocky islets are popular with seabirds (Kittiwake, Cormorant and Black-backed Gulls). The brightly coloured lichen in the foreground covers the mainland rocks.
Cerrig Gwylan From a Lichen-encrusted Mainland
These two rocky islets are popular with seabirds (Kittiwake, Cormorant and Black-backed Gulls). The brightly coloured lichen in the foreground covers the mainland rocks.
Abereiddy Beach Abereiddy (usual Welsh spelling: Abereiddi) is a hamlet in the county of Pembrokeshire, in south-west Wales.

It has a small beach. A large car park adjoins the beach, where in the summer an ice cream van can usually be found.
Abereiddy Beach
Abereiddy (usual Welsh spelling: Abereiddi) is a hamlet in the county of Pembrokeshire, in south-west Wales. It has a small beach. A large car park adjoins the beach, where in the summer an ice cream van can usually be found.
The Blue Lagoon The Blue Lagoon is a large disused slate quarry, now filled with seawater through a breach in the outer wall. This is 25m deep, according to a nearby Pembrokeshire National Park information board. Despite the name, the water is always a distinct greenish hue, owing to the mineral content within the quarry.

The lagoon is a favourite for adventure groups practising Coasteering.
The Blue Lagoon
The Blue Lagoon is a large disused slate quarry, now filled with seawater through a breach in the outer wall. This is 25m deep, according to a nearby Pembrokeshire National Park information board. Despite the name, the water is always a distinct greenish hue, owing to the mineral content within the quarry. The lagoon is a favourite for adventure groups practising Coasteering.
Bluebell Covered Clifftops
Bluebell Covered Clifftops
Aber-pwll
Aber-pwll
Caer Aber Pwll (Caerau) Iron Age Fort The complex defences at Caer Aber Pwll (Caerau) define a simple promontory fort to the east and a more heavily defended promontory fort on the west, both utilising the defensive potentials of the steep coastal cliffs. The western fort contains at least one building platform and is enclosed by a complex of up to four banks and ditches thought to represent at least two periods of construction, of uncertain relation, extending over a roughly 172m front. The main, inturned, gateway can be made out on the far side of the earthworks.

A second enclosure on the east, about 48m by 34m, may be a fragment of an early enclosure, isolated by redevelopment, an annex, or a separate and later enclosure butting onto the primary work.
Caer Aber Pwll (Caerau) Iron Age Fort
The complex defences at Caer Aber Pwll (Caerau) define a simple promontory fort to the east and a more heavily defended promontory fort on the west, both utilising the defensive potentials of the steep coastal cliffs. The western fort contains at least one building platform and is enclosed by a complex of up to four banks and ditches thought to represent at least two periods of construction, of uncertain relation, extending over a roughly 172m front. The main, inturned, gateway can be made out on the far side of the earthworks. A second enclosure on the east, about 48m by 34m, may be a fragment of an early enclosure, isolated by redevelopment, an annex, or a separate and later enclosure butting onto the primary work.
Pembrokeshire Coastal Path
Pembrokeshire Coastal Path
Cerrig Gwylan These two rocky islets are popular with seabirds (Kittiwake, Cormorant and Black-backed Gulls).
Cerrig Gwylan
These two rocky islets are popular with seabirds (Kittiwake, Cormorant and Black-backed Gulls).
The mouth of the Blue Lagoon The Blue Lagoon is an abandoned slate quarry, now flooded by the sea.
The mouth of the Blue Lagoon
The Blue Lagoon is an abandoned slate quarry, now flooded by the sea.
Cliff diving board, Blue Lagoon The Blue Lagoon is an abandoned slate quarry, now flooded by the sea. The diving board, soon to be dismantled, was installed for the Red Bull Cliff Diving Event held on the preceding two days.
Cliff diving board, Blue Lagoon
The Blue Lagoon is an abandoned slate quarry, now flooded by the sea. The diving board, soon to be dismantled, was installed for the Red Bull Cliff Diving Event held on the preceding two days.
Aerial ropeway, Blue Lagoon The Blue Lagoon is an abandoned slate quarry, now flooded by the sea. A large amount of equipment was installed on the overlooking clifftop for the Red Bull Cliff Diving Event held on the preceding two days. Here the gear is being laboriously dismantled and returned to the mainland via this aerial ropeway.
Aerial ropeway, Blue Lagoon
The Blue Lagoon is an abandoned slate quarry, now flooded by the sea. A large amount of equipment was installed on the overlooking clifftop for the Red Bull Cliff Diving Event held on the preceding two days. Here the gear is being laboriously dismantled and returned to the mainland via this aerial ropeway.
Cerrig Wylan Two rocky islets off the Pembrokeshire Coast.
Cerrig Wylan
Two rocky islets off the Pembrokeshire Coast.
Cerrig Wylan Seen from the nearby headland, it is not entirely clear that there are two islands lying offshore.
Cerrig Wylan
Seen from the nearby headland, it is not entirely clear that there are two islands lying offshore.
Show me another place!

Blue Lagoon is located at Grid Ref: SM7931 (Lat: 51.937881, Lng: -5.2090659)

Unitary Authority: Pembrokeshire

Police Authority: Dyfed Powys

Also known as: Morlyn Glas

What 3 Words

///tycoons.undivided.skylights. Near Llanrhian, Pembrokeshire

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Nearby Amenities

Located within 500m of 51.937881,-5.2090659
Abereiddy
Created By: Potlatch 0.8b
Is In: Pembrokeshire
Place: hamlet
Wikidata: Q4667060
Lat/Long: 51.9352634/-5.2052018
Toilets
Created By: Potlatch 0.10b
Lat/Long: 51.9373964/-5.2045749
Bus Stop
Bench: no
Bin: yes
Bus: yes
Public Transport: platform
Shelter: no
Lat/Long: 51.9361811/-5.2054566
Power: pole
Lat/Long: 51.933672/-5.2065915
Power: pole
Lat/Long: 51.9354928/-5.2035981
Power: pole
Lat/Long: 51.9359443/-5.2042285
Bench
Backrest: no
Lat/Long: 51.9374392/-5.2064761
Ford: yes
Lat/Long: 51.9369478/-5.2060251
The data included in this document is from www.openstreetmap.org. The data is made available under ODbL.

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