In the United Kingdom we are fortunate in that we still possess a vast and varied railway network in terms of railway mileage, infrastructure, architecture and engineering. Railway tunnels were a means for railways to take the most direct and level course through obstacles such as hills or as a means of passing through land where
Source: Railway Tunnels – Architectural Splendor & Unusual Features
– Full Blog by Edward Kendal (RailwayManiac.com)
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