As fall approached, Chinese crews were taken off other parts of the line and hurried once more to the summit ... the top of Donner Pass, where it was let down carefully above Tunnel No. 6 and ...

Although it was already early summer of 1867, portions of California's Donner Pass remained blanketed ... extend from the east portal of the Summit Tunnel to the Truckee River by year's end.

Summit Camp is located along Donner Pass Road, just past the Donner Summit ... which was focused on blasting and building tunnels through the Sierra Nevada mountains as part of the ...