Rhodri Miller, Alesha O'Connor and Corey Price, all 17, were killed along with Margaret Challis, 68, after an horrific crash on the A470
A young driver who recently passed his driving test was killed with his girlfriend and best friend in a crash on a notorious mountain pass.
Rhodri Miller, 17, was driving with his girlfriend Alesha O'Connor and best friend Corey Price, both 17, when they smashed into an oncoming car.
Rhodri had only recently passed his driving when he went out on Friday night in a convoy of six cars before the tragic road smash.
His friend Corey was a promising young footballer who trained with the Cardiff City Football Academy.
The crash also claimed the life of 68-year-old Margaret Challis who was a front seat passenger in an black Volkswagen Golf estate which collided head on with Rhodri's green Volkswagen Golf.
Seven teenage boys, aged 17 and 18, have been arrested on suspicion of dangerous driving on the notorious twisting stretch of the A470 which sweeps through the Brecon Beacons National Park.
Rhodri and Corey, who both attended Bro Morgannwg High School in Barry, South Wales, were killed almost immediately in the "head on collision" on Friday night just before 10.15pm near the Storey Arms outdoor centre.
Paramedics and fire crews were on the scene within minutes and pulled them from the wreckage of the black Golf but they couldn't be saved.
Alesha, who attended St Richard Gwyn Roman Catholic High School in Barry, and Mrs Challis, from Merthyr Tydfil, were rushed to hospital but tragically died of their injuries in hospital on Saturday.
Two other teenagers travelling in the same car are still in a critical state in hospital and friends on social media are asking for people to pray they pull through.
Dyfed-Powys Police said the driver of the green Golf estate in which Mrs Challis was a passenger remains "seriously injured" in hospital.
Witnesses who arrived at the notorious accident blackspot after the crash described seeing a car engine lying in the middle of the road.
Witness Nigel Shiel, 59, from Brecon, said it was clear it had been "a very large impact" from the debris spread across the road.
He said: "We are used to incidents on the Beacons because of the shape of the roads but it wasn't until you got close to it that you could see how serious it was.
"I got out of my car and approached some of the youths walking around. They seemed a bit shocked which is understandable."
Powys County councillor Liam Fitzpatrick said the road was "notoriously dangerous" - with an average of four to five deaths per year.
Cllr Fitzpatrick said: "We've been aware of how dangerous this road is for many years.
"There was a representative from the Welsh Government, Sheena Hague, reporting to the government on the road only three or four months ago.
"There is very well documented evidence of how dangerous this road is. We consistently hope that something can be done."
He said the spot where the incident happened between the Storey Arms and Brecon was particularly dangerous.
Dylan Jones, head teacher at Ysgol Bro Morgannwg in Barry, confirmed one of those killed was a sixth form pupil at the school and a former male pupil had also died while a third pupil was seriously injured in hospital.
Mr Jones said: "I have spoken to both parents and we are preparing for Monday so that we can offer all assistance and counselling to the pupils."
Superintendent Chris Curtis said: "This is a tragic incident and our thoughts are with the families at this difficult time. We are working with South Wales Police in order to provide support to the families affected and also the communities they live within.
"We will work with partners to ensure that the incident is fully investigated."