The Hill Street Tunnels, looking north on Hill Street from First
1954-2014 Like many of the city's early public works projects, the Hill Street Tunnels provided a solution to one of Los Angeles' greatest topographic obstacles to regional mobility, the hills at Downtown's northwestern edge. While of most of them had been covered by the street grid by the turn of the 20th century, their steep…
Cliff Railways - West Hill - Visit 1066 Country
160 Bunker hill ideas bunker hill, bunker hill los angeles, los angeles history
330 Los Angeles-Past and Present ideas los angeles, los angeles history, vintage los angeles
Los angeles history
Southern portal of Hill Street Tunnel (Double Bore) - Lost Tunnels of Broadway & Hill St. (Broadway on My Mind #16) - PocketSights
The covert history of the underground tunnels in Downtown Los Angeles - Tunnel Insider
Tunnels and underground excavations, History, Methods, Uses, & Facts
transit urban diachrony
Chiltern Tunnel - HS2
Southern portal of Hill Street Tunnel (Double Bore) - Lost Tunnels of Broadway & Hill St. (Broadway on My Mind #16) - PocketSights
Zion-Mt. Carmel Highway and Tunnel History - Zion National Park (U.S. National Park Service)
What led to the Uttarakhand tunnel collapse
