Breaching The Gothic Line in 1944 would test the allies, especially the Americans as they tried to push north to the Po River ...

Many bridges and viaducts have had to be constructed but the outstanding feature is the Apennine Tunnel, 11 miles 882 yards in length, which is the longest tunnel in the world with a double track.

More information: Claudia Sgambato et al, Millennial Slip‐Rates Variability of Along‐Strike Active Faults in the Italian Southern Apennines Revealed by Cosmogenic 36Cl Dating of Fault Scarps ...

This serial property is an unusually well-preserved and extensive epigenic gypsum karst terrain. It includes a very high density of caves: over 900 caves in a relatively small area, with over 100 km ...