My YouTube video of the Marin Headlands Fortifications, my music also..

[Radman64]

I did a photo montage back in 08 for a Militaria site I was quite active in showing the fortifications that covered the San Francisco bay entrance, my brother was hounding me to post my music so I interloped a recording from 04 when I was in a band of a song I created with some of the pictures I took.
SF during WW2 was the most heavily defended area in the United States during the 40's and it's amazing those that have lived here forever never had a clue it was in our backyard, some of it dates back to the Civil War.

 

[sonofeugene]

I’ve played my Native American flutes in the tunnels on the north side of the GG bridge. The echos and reverberations are awesome.

 

[Radman64]

I’ve played my Native American flutes in the tunnels on the north side of the GG bridge. The echos and reverberations are awesome.

The acoustics one would get in those 16" gun emplacements would be off the hook and they go deep, if I ever go again I will take a guitar.
The whole area bristled with guns of every caliber along with heavy beach defenses, if one hikes the mountains just beyond the coastal flats there are still remains of heavy trench systems with rotted wood sidings, climb to the top of them and there is a lot of old AA concrete emplacements. One of the pictures in the video shows a large steel platform, the site was called Eagles peak, it held massive hearing devices to detect incoming planes along with many gun emplacements. There is still the remains of the concrete road that was used to service/supply them (blocked off from traffic entering with old steel gates from what is now public roads) but the distance and incline will test one's heart for sure, the lack of any graffiti says it all.
Every small municipal airport in the North Bay Area started out as a Army Air Corp base for the most part, Santa Rosa, San Rafael, Petaluma etc, was a few in the Bay Area itself like Hayward that the AAC flew out of.
At one time the San Franciscan Bay was the main hub for Pacific operations during WW2 (and well before) for the Navy/Army and in the post war years, anyone shipping out for combat the last thing they saw was the Golden Gate be it Army or Marines. The headquarters for the Western defense was located at the Presidio in SF till the 90's. The Navy had Mare Island, Alameda Island, Hunters Point Naval yard (huge dry docks), Treasure Island and the Concord Naval Weapons Station that held the nukes for submarines in it's later years but all the rest of the ordnance prior to them.
Sunnyvale Naval Air station (Moffet Field), Fort Ord, all of it got wiped out during the Clinton admin, the amount of civilian job loss was staggering.

 

[Radman64]

On a side note what do you think of the song, we recorded it on a laptop lol.

 

[sonofeugene]

For anyone who visits the north side of the bridge to explore, and who plays a musical instrument, be sure to bring your instrument with you. Besides tunnels with amazing echoes and reverberations, there are also ammunition bunkers inside the tunnels with equally amazing echoes and reverberations. And bring a good flashlight or headlamp with you so you can explore.

And occasionally there is a concert held in one of the tunnels. It’s the equal to the echoes and reverberations inside the Taj Mahal in India.

 

[sonofeugene]

While the echoes and reverberations aren’t exactly the same, my link below will give you an idea of what the acoustics are like in the tunnels.

The link is to Paul Horn’s “Inside” double album. The first half Paul recorded back in 1968 and is a rerelease. The second half was recoded more than 20 years later n 1989, this time with permission from the Indian government. I think it’s absolutely beautiful and so completely peaceful.

The voice you hear is an unknown Indian guard, singing in Hindu. The echoes and reverberations are completely natural and predate any electronics.

When Paul first went to play there one evening, he found that the original guard who gave him permission to play inside the dome had been replaced by another guard who said no. Paul said to him, “You sing here”, to which the guard said “I sing to god”. Paul then said to the guard, “I play my flutes to god” and pulled out a silver flute in low C. He blew one note which hung in the air nearly 30 seconds. After that single note, the guard said Paul could play. That first album is credited with creating the New Age genre.

Put your headphones on and turn it up:

 

[Radman64]

Yeah..

 

[sonofeugene]

Yeah??