Tributes will be paid to the 116 children and 28 adults who lost their lives in the Aberfan disaster at events on Saturday.
It will be 50 years on 21 October since a coal waste tip collapsed and submerged a school near Merthyr Tydfil.
Veterans from The King's Own Royal Border Regiment will lead a parade to Aberfan's memorial garden.
Schoolchildren from around Wales will also perform a rendition of Myfanwy at St David's Cathedral, Pembrokeshire.
After heavy rain on 21 October 1966, a build-up of water in the accumulated rock and shale caused it to suddenly slide downhill in the form of slurry. 1,400,000 cu ft of debris smashed into the village in a slurry 39 ft deep. The slide destroyed a farm and twenty terraced houses along Moy Road and slammed into the northern side of the Pantglas Junior School and part of the separate senior school, demolishing most of the structures and filling the classrooms with thick mud and rubble up to 33 ft deep. Mud and water from the slide flooded many other houses in the vicinity, forcing many villagers to evacuate their homes.
The disaster caused the deaths of 144 people, 116 of which were children.
Aberfan 'lost generation' remembered in events 50 years on
BBC News
15 October 2016
Rescue workers at the scene of the Aberfan disaster the following day
Tributes will be paid to the 116 children and 28 adults who lost their lives in the Aberfan disaster at events on Saturday.
It will be 50 years on 21 October since a coal waste tip collapsed and submerged a school near Merthyr Tydfil.
Veterans from The King's Own Royal Border Regiment will lead a parade to Aberfan's memorial garden.
Schoolchildren from around Wales will also perform a rendition of Myfanwy at St David's Cathedral, Pembrokeshire.
The parade in Aberfan on Saturday is one of a number of events in Merthyr Tydfil county leading up to the anniversary of the disaster on Friday.
It starts at 11:00 BST when the veterans leave Aberfan Community Leisure Centre and march to the memorial garden, where they will lay a wreath.
Many tributes have taken place or are planned around the anniversary, with the Welsh football team visiting the village recently.
Real Madrid and Wales footballer Gareth Bale in the Aberfan Disaster Memorial Garden
Another event on Saturday called A Tribute to Aberfan will see schoolchildren from across south Wales perform, led by by the Llanelli-based Hywel Girls' Choir and Hywel Boys Singers.
They will sing Myfanwy in Welsh costumes, with the song left unfinished and a single red rose left on stage in memory of the lost generation of Aberfan.
The Hywel choir had begun performing worldwide before the disaster.
Conductor John Hywel Williams said: "On numerous concert tours around the world over subsequent years, people would come up to the choir and reference Aberfan.
"The pain of Aberfan in losing a generation in those fateful seconds was felt by a global community."
144 people, 116 of which were children, were killed in the disaster on 21 October 1966
Aberfan 'lost generation' remembered in events 50 years on - BBC News
It will be 50 years on 21 October since a coal waste tip collapsed and submerged a school near Merthyr Tydfil.
Veterans from The King's Own Royal Border Regiment will lead a parade to Aberfan's memorial garden.
Schoolchildren from around Wales will also perform a rendition of Myfanwy at St David's Cathedral, Pembrokeshire.
After heavy rain on 21 October 1966, a build-up of water in the accumulated rock and shale caused it to suddenly slide downhill in the form of slurry. 1,400,000 cu ft of debris smashed into the village in a slurry 39 ft deep. The slide destroyed a farm and twenty terraced houses along Moy Road and slammed into the northern side of the Pantglas Junior School and part of the separate senior school, demolishing most of the structures and filling the classrooms with thick mud and rubble up to 33 ft deep. Mud and water from the slide flooded many other houses in the vicinity, forcing many villagers to evacuate their homes.
The disaster caused the deaths of 144 people, 116 of which were children.
Aberfan 'lost generation' remembered in events 50 years on
BBC News
15 October 2016
Rescue workers at the scene of the Aberfan disaster the following day
Tributes will be paid to the 116 children and 28 adults who lost their lives in the Aberfan disaster at events on Saturday.
It will be 50 years on 21 October since a coal waste tip collapsed and submerged a school near Merthyr Tydfil.
Veterans from The King's Own Royal Border Regiment will lead a parade to Aberfan's memorial garden.
Schoolchildren from around Wales will also perform a rendition of Myfanwy at St David's Cathedral, Pembrokeshire.
The parade in Aberfan on Saturday is one of a number of events in Merthyr Tydfil county leading up to the anniversary of the disaster on Friday.
It starts at 11:00 BST when the veterans leave Aberfan Community Leisure Centre and march to the memorial garden, where they will lay a wreath.
Many tributes have taken place or are planned around the anniversary, with the Welsh football team visiting the village recently.
Real Madrid and Wales footballer Gareth Bale in the Aberfan Disaster Memorial Garden
Another event on Saturday called A Tribute to Aberfan will see schoolchildren from across south Wales perform, led by by the Llanelli-based Hywel Girls' Choir and Hywel Boys Singers.
They will sing Myfanwy in Welsh costumes, with the song left unfinished and a single red rose left on stage in memory of the lost generation of Aberfan.
The Hywel choir had begun performing worldwide before the disaster.
Conductor John Hywel Williams said: "On numerous concert tours around the world over subsequent years, people would come up to the choir and reference Aberfan.
"The pain of Aberfan in losing a generation in those fateful seconds was felt by a global community."
144 people, 116 of which were children, were killed in the disaster on 21 October 1966
Aberfan 'lost generation' remembered in events 50 years on - BBC News