1. 1730.c.5, 1(4) Reference (shelfmark): 1730.c.5, 1(4) Title: Souterrain de Duranus. (Alpes-Maritimes.) Route Départementale No. 1. Photographer: Unknown Scope & Content: View looking along the cliff-side road towards the tunnel, built in 1859 and overlooking a sheer drop of 200 metres. Collection Area: Printed Collections Languages: Not applicable Date Range: 1870s Extent: 1 item