Tunnels 17 and 18, from top of Tunnel 16
Tunnels 17 and 18, from top of Tunnel 16, looking up the incline; at 7 3/4 miles
Picture No
10510676
Media ID
46040649
Size
4686px x 4000px
(4.4MB)
Credit
The Institution of Mechanical Engineers / Mary Evans
Source
Tredwell Family
Date
1856





























