tunnel-walking

Updated: January 6, 2026

The Leggers lay upon the deck of the vessel, or upon a board slightly projecting from either side of it, and, by thrusting their feet against the slimy roof or sides of the tunnel-walking horizontally as it were they contrived to push it through.

Samuel Smiles - The Life of Thomas Telford; civil engineer with an introductory history of roads and travelling in Great Britain