The Durham Coast’s Dark Horse
- Rating: Good Beach
- Terrain: Tricky
- Level: Intermediate
- Dog friendly: Yes, no restrictions
- Location: Blackhall Rocks, County Durham
- Sat Nav: TS27 4AZ
- Common colours: Green, brown, white
- Rare colours: Cobalt Blue, Black, Lavender, Red, Yellow
Best For
- Intermediate hunters
- Rock pool hunting
- Well-frosted glass
- Low-tide exploring
- Quiet beaches
- Technical searching
- Post-storm hunting
Why Blackhall Rocks deserves your attention
Most people driving the Durham Heritage Coast are heading for Seaham. That’s understandable, Seaham is Seaham. But keep going south past the clifftop nature reserves and the dramatic magnesian limestone headlands, and you’ll reach a beach that gets significantly less attention than it deserves.
Blackhall Rocks is a wild, atmospheric stretch of coastline with caves carved into ancient limestone cliffs, rock pools teeming with life at low tide, and a foreshore that rewards hunters who are prepared to work for their finds. The sea glass here isn’t wall-to-wall the way it is at Seaham. But it’s real, it’s varied, and on the right day after a North Sea blow, the strandline can throw up some genuinely excellent pieces.
The beach also has one of the most dramatic industrial backstories on the entire Durham coast which matters for sea glass hunters, because the history is exactly why the glass is here.
This is a beach for people who don’t mind a scramble, who want somewhere off the beaten track, and who’d rather share the foreshore with seals and skylarks than a crowd of fellow collectors.
What you’ll find here
Colours commonly found: Green, brown, white
Occasional finds: Blue, Aqua, Amber, Turquoise
Rare finds: Cobalt Blue, Black, Lavender, Red, Yellow, multi-coloured
Bonus: Fossils in the limestone, coal fragments, Victorian pottery shards, and occasional sea-tumbled ceramics
When to go
Come at low tide, ideally a big spring low around new or full moon. The foreshore at Blackhall opens up considerably when the tide drops, exposing rocky shelves and shingle ridges that simply don’t exist at high water. The rock pools trap and hold glass well, so the areas around the cave sections and the rocky outcrops at the southern end are worth thorough investigation.
Winter is the stronger season. Storm activity churns the seabed and drives fresh material onto the beach, and the site is quieter at busy times in summer, particularly on good-weather weekends. The car park fills up, and the rocks attract families. The sea glass isn’t going anywhere, but you’ll hunt better with space to work.
The day after a significant North Sea storm is your sweet spot. Easterly winds and heavy swell push glass up into the crevices and onto the shingle above the waterline.
Check the forecast, check the tides, and get there as the water pulls back.
Hunting Style
“Low-Tide Rock Pool Hunting”
Meaning:
- arrive on a falling tide
- search slowly
- Inspect pool edges carefully
- Check the trapped shingle between rocks
- Revisit exposed shelves as water retreats
This is not a fast scanning beach.
The good finds tend to come from:
- patience
- angle changes
- getting low
- checking pockets, others skip
Today’s tide times & Sea Glass Score
Blackhall Rocks sits on the North Sea, with a tidal range of around 4.9 metres on a spring tide, a generous range that exposes substantial foreshore when the tide is fully out, pulling back to reveal rock platforms, shingle beds and cave-mouth debris that are completely submerged at high water.
The widget below uses Seaham Tide Data to show today’s Sea Glass Score, tide curve and best hunting window. Aim for the two hours either side of low water on a spring tide, especially after stormy weather; the rocky sections in particular need a proper low tide to open up.
Where to look on the beach
Access to the beach is via steep steps from the car park worth knowing before you go, as it rules out pushchairs and makes the descent a little awkward if you’ve loaded yourself down with kit. Once you’re down, the beach stretches north and south along the base of striking magnesian limestone cliffs.
The cave section is the most productive hunting ground. The caves at Blackhall are the largest in the Durham limestone coastline, and glass gets trapped in the debris that accumulates around cave mouths and in the boulder fields at the base of the cliffs. Work slowly here and check between rocks rather than just scanning the surface.
The rock pools and platforms at low tide are worth methodical searching. Glass sits in crevices and under pebble edges in pools the kind of places you’d walk straight past if you weren’t crouching down and looking properly.
The strandline above the high-tide mark is always worth checking for lighter pieces carried up by storm surges. Look for the accumulations of pebbles, weed and shell debris; sea glass tends to cluster in the same places.
Stay aware of the tide coming back in, particularly around the cave areas and rock platforms. The beach is exposed, and the tide moves quickly. Always check the times before you head down.
Key Tip
Don’t rush straight to the waterline. At Blackhall, the best glass often sits higher in trapped shingle ridges and around the edges of rock pools exposed only during lower tides.
Dog friendly?
Yes -Blackhall Rocks has no seasonal dog restrictions. Dogs are welcome all year round, on or off lead (though lead control near the cliff edge is sensible). The terrain makes it a brilliant dog beach, with plenty of space to roam, rock pools to investigate, and interesting smells from the cave areas. Though the steps down from the car park require a bit of management.
The clifftop path is also dog-friendly and offers fantastic views along the Heritage Coast, a good option if you want to extend the walk before or after the hunt.
Looking for somewhere dog-friendly nearby afterwards? Check our Yappy Places listings for the Hartlepool area for cafes and pubs that’ll welcome a sandy Jack Russell without judgement.
Practical information
Parking: Free car park at TS27 4AZ, approximately 20 spaces including disabled bays. It’s a small car park and fills quickly on sunny weekends and bank holidays. Arrive early. There’s no alternative parking nearby.
Toilets: No facilities at the beach itself. The nearest public toilets are in Blackhall Colliery village, a short drive away.
Food and drink: No cafe or kiosk at the beach. Cod on the Rocks chip shop is nearby and well-regarded. Hartlepool town centre is around 10 minutes by car with a full range of options.
Getting there without a car: There are regular bus services from Sunderland and Hartlepool to Blackhall, with a short walk to the beach from the village. The car park and beach access point are well signposted from the main road (A1086).
Accessibility: The clifftop circular route is accessible and gently undulating, with a sealed 2-metre-wide surface suitable for wheelchair users, with one short, steeper section. However, beach access itself is via steep, uneven steps and is not suitable for wheelchairs or pushchairs. The beach terrain is rocky and uneven underfoot once you’re down.
What to bring
- Sturdy boots or wellies – the rocks and cave areas are slippery and uneven underfoot
- A small container for your finds -glass gets tucked into pockets and lost
- Layers and a windproof – the Durham coast is exposed, and the clifftop particularly so
- A torch if you’re exploring cave mouths – useful for spotting glass in dark crevices
- Tide times checked before you leave – the rocky platforms flood fast
- A lead for the steps down and the cave areas
The history behind the glass
To understand the glass at Blackhall Rocks, you have to understand what this coastline used to look like.
Blackhall Colliery opened in 1909, sunk by Horden Collieries Ltd. and drew its first coal in 1914. At its peak in 1950, the colliery employed nearly 2,500 workers, cutting coal from seams running out beneath the North Sea. The waste from all that extraction had to go somewhere and for decades, it went straight to the beach.
An aerial ropeway system carried colliery refuse from the pit head and tipped it directly into the sea. Day after day, year after year, for the better part of seventy years.
By the time the colliery closed on 16 April 1981, the beach had been transformed into something almost unrecognisable. The director of Get Carter chose Blackhall Rocks as the climactic location for his 1971 film because it looked, in his own words, like “an absolute vision of hell”, the beach black with coal spoilings, the sea discoloured, the landscape stripped of life. Alien 3 used it for similar reasons in 1992: it looked like another world because, effectively, it was.
What the colliery dumped wasn’t only coal waste. The communities along this coast, the villages, the colliery workers, and the households generated their own glass waste across the same decades. Bottles, jars, window glass, domestic vessels: all of it found its way into the sea and onto this foreshore, mixed in with the industrial spoil. The North Sea has spent the decades since the colliery’s closure breaking it down, frosting it, rolling it smooth.
The transformation has been remarkable. The £10 million Turning the Tide regeneration project, running intensively from 1997 to 2002, removed 1.3 million tonnes of debris from across the Durham coast, restored habitats, and reclaimed 80 hectares for nature. Blackhall Rocks is now a designated Local Nature Reserve and SSSI, part of the Durham Heritage Coast.
The caves are the largest on the Magnesian limestone coast. Seals haul out on the rocks. Skylarks breed on the clifftops at one of the highest densities in County Durham.
The glass is what remains of all that human activity refrosted, re-tumbled, and slowly working its way back up the beach.
From beach to jewellery
Find something beautiful at Blackhall Rocks? At Mermaid Tears, every piece starts exactly where you’re standing, hand-hunted from UK beaches and handmade into jewellery you’ll keep forever. Browse the collection
Disclaimer: Tide times, dog restrictions, parking charges and beach conditions change regularly. Always verify before visiting. Beach byelaws are updated annually. Check with the local council or beach authority for the most current rules.
Last updated: May 2026
Frequently asked questions
Is Blackhall Rocks good for sea glass hunting? Yes – it’s a reliable Good Beach, particularly after storms. It won’t produce the volume of Seaham, but the range of colours can be excellent, and the setting is dramatic. Worth the trip on its own merits, especially if you’re already exploring the Durham Heritage Coast.
What’s the best time to hunt for sea glass at Blackhall Rocks? Low tide on a spring tide, ideally the morning after a significant North Sea storm. The rock platforms and cave areas are only accessible when the tide drops significantly. Don’t try to hunt the interesting sections at high water.
Are dogs allowed at Blackhall Rocks beach? Yes – there are no seasonal dog restrictions. Dogs are welcome all year round.
Why does Blackhall Rocks appear in films? Before the coastline was cleaned up, the beach was blackened by decades of coal waste dumped by Blackhall Colliery’s aerial ropeway system. The director of Get Carter (1971) used it as a location because it looked like an apocalyptic wasteland. Alien 3 (1992) did the same. It looks quite different today.
Is the beach accessible? The clifftop path has an accessible circular route with a sealed surface, but beach access itself is via steep, uneven steps. The beach terrain is rocky and uneven. Not suitable for wheelchairs or pushchairs once you’re below the cliff.
How far is Blackhall Rocks from Seaham? Around 8 miles north by road, about 20 minutes. If you’re planning a Durham Heritage Coast sea glass day, the two beaches work well together: Seaham for volume, Blackhall for atmosphere and the chance of something different.
