Llan Colliery disaster: Memorial to Gwaelod-y-Garth mine deaths
On 6 December 1875, 16 men and boys died in Cardiff's only mining disaster.
The explosion happened at Llan Colliery in Gwaelod-y-Garth.
To mark the anniversary, villagers gathered to unveil a memorial to those who lost their lives.
BBC Wales Today's Carwyn Jones reports.