First look at National Grid's £100m tunnel under Menai Strait
The 4km tunnel, hailed as 'one of the most significant civil engineering projects in Wales', will connect Wylfa Newydd to the main network
First look at National Grid's £100m tunnel under Menai Strait
The 4km tunnel, hailed as 'one of the most significant civil engineering projects in Wales', will connect Wylfa Newydd to the main network