Say you find yourself in Fresno, California on a sweltering summer day.

The temperature gauge on your car hovers around 110 degrees, and there's sweat dripping down your face.

There's one place you can go to escape the heat, no air conditioning necessary.

But to get there, you kind of have to know where to look.

We're very unassuming from ground level.

People park and they get out of their cars and kind of just looking around.

From ground level, we don't look necessarily like a whole lot because everything's really underground.

But then near this nondescript parking lot, you'll see a staircase.

Once our guests start walking down our entry staircase and they start feeling that 10 degree

temperature difference and they're looking at these man-made

walls and the citrus that's growing 10 feet underground.

They're just blown away.

I'm Dylan Thurris and this is Atlas of Skira, a celebration of the world's strange, incredible, and wondrous places.

Today, we are taking you to an underground oasis, a winding maze of rooms and passageways filled with lush citrus trees.

And all of this is the product of one man's dedication and work over four decades.

A visit to the forest deer underground gardens in Fresno, California.

Coming up after this. Think underground gardens, and you might picture someone growing plants in their basement under a huge bank of fluorescent growlights, a kind of dark, damp, and humid experience.

But Kamisipola, who's the operations manager of the Forest Deer Underground Gardens,

says that their garden is the exact opposite.

Because he's got these skylights and these little, we call them like keek holes, that lets light in and air in everywhere, it's very light and airy.

And there's never really that long of a passageway before you get to another room that's nice and open or has a nice big skylight.

A walk through these gardens takes you through winding arched passageways.

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