I recently found an article from 1961 about the discovery of an underground tunnel on what was the MacDermont Mansion in West Oakland. This is what I discovered looking into the mansion.
MacDermot Mansion – Oakland Local wiki
Forgotten Tunnel Revives Dimming Memories
In 1961 the Peralta Villa, a 20-year-old WWII housing unit, was being demolished to make room for new low rent apartments. They were located in the area bounded by 7th, 8th, Center and Cypress Streets. Oakland Tribune March 23, 1961
While clearing the land, a workman discovered a concrete-lined tunnel long forgotten and never recorded on the city records.
Was it a WWII bomb shelter? Did rum runners use it during prohibition?
The guesses proved to be wrong but an exciting story.
The Tunnel
The tunnel (built between 1905 -1910) was the work of Louis MacDermot, the son of a prominent early Oakland family who owned the land. Their home (1407 8th St) was built sometime before 1876 (some say it could have been the French consul). Charles F. MacDermont’s name appears on title records as early as 1870. The home was a showplace with landscaped grounds covering the entire block. In the 1920s, the city proposed buying the site for a park, but the plan fell through. The home stood empty and decaying behind a wooden fence until 1941 when it was razed to make way for the war-time housing. The tunnel went undetected then.

The concrete-lined tunnel ran across the stable yards from the brick boiler room near the family home to a machine shop. It was about 3 feet wide and 4 1/2 feet high. There were L-shaped hooks with oval rollers embedded on the sides. Conductors for electrical wire had been installed on the ceiling. The hooks apparently held steam lines which heat the machine shop.

The man who built Railroads – the small ones

Railroad buffs might know the name Louis MacDermot. He built miniature railroads. He and his mechanics designed locomotives, freight cars, and coaches in great detail.

In 1913, he was awarded the concession to build and operate an intramural railway at the Panama Pacific International Exposition (PPIE) due to open in February 1915. He started construction in his backyard. The first completed locomotive was the working engine No. 1500, an 0-6-0T type.
Engine No 1500 – ready to be moved
Swanton Pacific Railroad Society Newsletter January 2012
The Overfair Railway that ran along the Marina between Fort Mason and the Presidio. A 10 cent fare provided transportation to the Polo Field, State / Foreign buildings, California Building, Exhibit Palaces, Yacht Harbor, and The Zone.


Over open Railway on the Marina – San Francisco Bay -1915 –SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY.

Over open Railway on the Marina – San Francisco Bay -1915 –SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY.
The Decline of the MacDermot Estate
After the fair, MacDermot became a recluse and stayed on the deteriorating grounds of the family’s Oakland mansion.

Showing one of the old cars used in the
Panama Pacific World’s Fair at San Francisco in 1915
Jesse Brown Cook Collection–Bancroft Library
Unfortunately, this fate was also shared by the Overfair Railway wooden passenger and freight cars. The locomotives had the luxury of spending their “retirement” in sheds. The others did not fare so well.

Another photo of the MacDermot home with one of the cars in the yard – OMCA
Swanton Pacific Railroad Society Newsletter January 2012
In 1941 he agreed to build the “The Mountain Lion Railway” for the Oakland Zoo. He moved three engines and the twelve best passenger cars to the Alameda County Zoological Gardens (today’s Oakland Zoo). Beginning on August 1, 1941, with two cars running behind a forlorn No. 1913, the operation started. The faithful Pacific had lost both its boiler jacket and its leading truck, relegating No. 1913 to the status of a 0-6-2. The Overfair equipment had substantially deteriorated, and MacDermot increasingly erratic behavior soon forced the Zoo’s management to eject the railway. Please see – Swanton Pacific Railroad Society Newsletter January 2008


Louis MacDermot with Sid Snow – 1941 from the Swanton Pacific Railroad Society Newsletter – February 2004
Moving Day 1940 or 1941 and Overfair train coming up the grade at the Oakland Zoo with Sid Snow’s home in the background – (which I believe is from the Talbot Estate and not the Durant Estate as noted) from the Swanton Pacific Railroad Society Newsletter December 2007
Lost Dream



The railroad lives on
Swanton Pacific Railroad in Davenport CA
The Swanton Pacific Railroad serves as an operational memorial to Al Smith, who acquired and relocated the trains to the Swanton Pacific Ranch. The rolling stock consists of three one-third scale Pacific-type steam locomotives that were built for the 1915 Panama-Pacific International Exposition, a diesel switcher locomotive, and a variety of passenger and maintenance railcars.
Cal Poly’s Live Steam Railroad – Swanton Pacific Railroad
For more on the railroad –
- Oakland Tribune – Aug 1968 – Calling the Mini Rail Buffs
- Oakland Tribune – Jan 1969 – Railfans Dream Train For Sale –
- Over fair Railway Inventor Louis M. MacDermot – PPIE100
What an excellent article, thank you!
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Love these articles. Thank you!
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