At the heads of the Swansea Valley, nestled on the edge of the Brecon Beacons, you'll find Ystradgynlais - the second largest town in Powys.
But, just a stone's throw away, or around a mile from high street to high street to be precise, is neighbouring Ystalyfera.
Both traditional mining communities, they share shops, schools and even a postcode, but now a local coronavirus lockdown means they'll be worlds apart.
And while it might take less than 30 seconds to cross from one borough into the other, local lockdown rules imposed in Neath Port Talbot have created an impossible, and worrying, situation for some.
If only to highlight it's proximity, the Cwmtwrch recycling centre is listed on both Powys and Neath Port Talbot Council's website as a designated drop off point.
But from 6pm on Monday, September 28, the Neath Port Talbot local authority area entered local lockdown, meaning it's residents - including those in Ystalyfera - won't be able to leave the county unless for essential journeys.
But what does this mean for its Powys counterpart, or for the people who live and work on the border?
Robert Megson, is the owner of The Aubrey Arms, dead set between both counties.
While his postcode says he is in Powys, the official boundary of Neath Port Talbot - and lockdown - is just 352m away.
"We're right on the border, but usually we'd be having people coming from everywhere," he said.
"The pub gets a huge amount of local custom, as well as people from further away - and obviously we get a lot of people from Ystalyfera too.
"The crazy thing is, what these new rules mean is that somebody in Builth Wells could travel here and come and eat in the Aubrey, but somebody a stone's throw away in Ystalyfera can't - it's madness."
While the new lockdowns have been an especially tough measure for the pub and restaurant, Mr Megson said the 10pm curfew was the final nail in the coffin.
"Even before the lockdown in NPT was announced we saw a huge drop in business, around 30%, even just the talk of lockdown had an effect.
"To be honest, the 10pm curfew really killed us as well. The Aubrey is a popular restaurant but it's also a busy pub too so the 10pm has had a huge knock on effect for us," said the 54-year-old.
"Prior to this lockdown, with the Eat Out To Help Out Scheme, everything was great - it was a massive boost. We've been really proactive in working around Covid - we've improved our outdoor space and we got a marquee ready - we're just trying to reinvest ourselves and make sure we are ticking over.
"It's had a huge effect on us, I really do fear for the future. I'm not saying I'm thinking about redundancies but it's difficult for us - it might be the case of restricted opening hours.
"I own three pubs in different areas and it's crazy to see the impacts. The Aubrey in Ystradgynlais has definitely taken the biggest hit."
Perhaps somewhere the challenges of local lockdown are being most keenly felt are on the rugby field - where children who share a classroom together every day can now no longer play on the same team
Gareth Thomas, juniors coach at Ystradgynlais RFC, said they'd lost over 25 players and five coaches due to the new restrictions.
"Currently the club is fully functional under Covid guidance and the teams can carry on training because we're Powys. But unfortunately our players who are in the county of Swansea and Neath Port Talbot can't train with us," said Gareth.
"We've got around 200 junior players, I think it's about 25 players it's going to affect as well as five coaches."
With a population of just over 8,000 the children of Ystradgynlais would typically attend Ysgol Maesydderwen in Ystradgynlais or commute over the border to Ysgol Gyfun Ystalyfera in Neath Port Talbot for a Welsh language school.
What complicates the issue further is that Ysgol Gyfun Ystalyfera is within the catchment area for three different counties - Powys, Neath Port Talbot and Carmarthenshire.
"Something that really stands out is that we've got children from Carmarthenshire and Neath Port Talbot in the same classes in school. The boys from Carmarthen can come and play but the ones in Neath Port Talbot can't - even though they're in the same class," said Gareth.
"They've only just come back from the recent Covid restrictions so it's going to be really difficult having to explain to these children who absolutely love playing for the club why they're not going to be able to come just because they live somewhere else."
As the second biggest town in Powys, Ystradgynlais relies heavily on getting footfall to its high street - something businesses said they were concerned would drop.
Tristan Davies owns school uniform and childrens clothes shop 'Pethau Plant' in Station Road in the town centre.
"It's been busy, because of the school uniform period in August and September it's been great," he said.
"But yeah I think these new restrictions will have an affect - there'll definitely be less footfall in the area so I suppose we just have to wait and see."
Echoing the mood of many, Tristan thought some people were confused at what was and was not allowed as part of the local lockdowns.
"There's a lot of confusion definitely. I think lots of people are wondering whether they can come across the border for certain things and what's classed as essential - so there is definite confusion."
Outside of the town centre, The Clockworks pub and restaurant is almost in view of the border.
Having opened just two years ago, it has been going from strength to strength - but now, deputy manager James Waugh said the new restrictions had started to have an impact.
"We've already noticed a decline in sales. Last Sunday we were on for a good week but with the 10pm and the lockdowns it's all going straight down for the week," he said.
"We've had people cancel bookings because they're out of the area and obviously don't want to get a fine so it has definitely affected us.
"It's funny here because we're in Powys but all the surrounding areas are in lockdown so we're really having to rely on locals."
While the situation in Ystradgynlais is worrying, over the border in Ystalyfera, it's equally as dire.
As well as losing trade, people who live and work in the area are now restricted to remaining within the county.
Chloe Astley, owner of Browns hair salon in Ystalyfera, is usually closed on Mondays but opened to make the most of the trade before lockdown.
"We've been open today to try and fit everyone in before the lockdown kicks in," she said.
"It's going to have a huge effect. Because we're so close to the border I'd say it's going to affect around 50% of our customers.
"We've got loads of customers from Powys which is just down the road who obviously won't be able to come now because of the lockdown."
She added: "We can only fit a few people in the shop so we're as busy as we can be really but even that will quieten down."
For many, the confusion between both areas is down to sharing a postcode - both Ystalyfera and Ystradgynlais are SA9 despite being in different counties - meaning the border can often be mistaken.
"Because we're so close, I don't think a lot of people actually realise where the border is to be honest with you," said Chloe.
