From K-QED.

Around us all the time is the city that we know.

The same stretch of sidewalk we walk on every day. The bus stop on on on the

stop on the corner.

Our favorite restaurants, our neighborhood parks.

If you live anywhere long enough, you can think you've seen it all.

But what if, beneath the streets, there was another world.

A place that's so close to you all the time,

but you wouldn't even recognize it.

Since Bayreous launched, we received a bunch of questions about tunnels.

Listeners saying they've heard stories of secret passageways running under San Francisco.

So for our Halloween episode, we explore, do these tunnels exist?

I'm Olivia Allen Price and you're listening to Bay Curius.

Support for Bay Curious is brought to you by Sierra Nevada Brewing Company,

still family owned, operated, and argued over.

Explore their brews wherever fine beverages are sold and taste how trailblazing runs in the family.

Visit Sierra Nevada.com to find your new favorite beer today.

All right, those stories about hidden underground tunnel systems in the Bay Area, they're true.

The structure is absolutely amazing. It's also quite scary.

That voice you just heard was recorded deep under the streets of San Francisco and

it belongs to reporter Carly Severn. We set her to investigate

the secret world under the city. I want to take you underground with me, but let's start at the beginning.

...