https://www.rte.ie/news/europe/2019/0114/1023158-spain-boy-well/
Having a child around this age this is just an absolute horror story to read, heartbreaking for the family of the young lad who had recently lost another child in tragic circumstances.
The well was just 25cm in diameter. Having been in Spain before I think there health and safety with big drops is absolutely appalling ie little or no fencing to stop people falling to what could be a fatal injury.