World's oldest railway tunnel hidden by a rockery for 36 years is discovered 10ft underground in a back garden

The tunnel was nearly lost forever when the previous homeowner built a rockery in 1977

Tunnel can be traced back to 1793 and was used by industrialists to transport limestone to an ironwork factory

Länk: World's oldest railway tunnel hidden by a rockery for 36 years is discovered 10ft underground in a back garden