Opening of a trench during the construction of the rail line between Senhora da Hora and Trofa, part of the Guimarães Railway, in Portugal. This line was inaugurated in 1932.
This photograph was published in the Gazeta dos Caminhos de Ferro magazine No. 1381, of 1st July 1945, and scanned by the Hemeroteca Municipal de Lisboa.
Unknown author<span style="display: none;">Unknown author</span>
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