Darren McLean @darrenmcleanuk.bsky.social · 06/09/2026Subways: Excavating was far more common than tunnelling for subway and metro networks. The 'tunnels' can be surprisingly close to the surface, often making this a far more practical, faster and cheaper option. 3244
Darren McLean @darrenmcleanuk.bsky.social · 20/09/2026It's all really quite impressive, and not least of which being the ambition and vision of the people who started it all! 000
