Sunny Jim Sea Cave

SAN DIEGO'S HIDDEN GEMS

Sunny Jim Sea Cave: The Secret Tunnel Beneath a La Jolla Shop

Walk into a little shop along La Jolla's Coast Boulevard and you might assume you've found another place selling souvenirs.

Then you'll notice a staircase.

Follow it down and you begin descending through a tunnel carved into the sandstone beneath La Jolla.

Keep going.

At the bottom, the tunnel opens into a natural sea cave where Pacific Ocean water moves through an opening in the cliffs.

Welcome to Sunny Jim Sea Cave — one of the strangest little adventures hiding along the La Jolla coastline.

First, You Have to Walk Into The Cave Store

That's part of what makes this place fun.

Sunny Jim doesn't begin with a hiking trail or giant attraction sign.

The land entrance is inside The Cave Store on Coast Boulevard in La Jolla.

Walk inside and you'll find access to a long staircase descending beneath the building.

And that's when this stops feeling like a souvenir shop.

You're About to Walk Through a Tunnel Dug by Hand

The tunnel wasn't always here.

In 1902, German-born artist, engineer and entrepreneur Gustav Schulz began digging a tunnel from his property above the cliffs toward the sea cave below.

This wasn't modern excavation.

According to the cave's history, the work was done with basic tools including picks and shovels.

The tunnel eventually created something extraordinary:

A way to enter a La Jolla sea cave without getting into the ocean.

Why Would Anyone Dig a Tunnel Into a Sea Cave?

Tourism.

Even more than a century ago, people understood that La Jolla's coastline was something visitors wanted to experience.

The tunnel allowed people to descend from the cliffs and see a sea cave from the inside.

Visitors reportedly paid a small admission fee for the privilege.

More than 120 years later, we're still doing essentially the same thing.

And There Are A LOT of Stairs

Before heading down, understand what you're signing up for.

The tunnel contains roughly 145 steps.

Going down is easy enough.

Then you remember something important:

You have to climb all of them again.

The staircase is narrow and can be damp.

Wear shoes with decent traction and take your time.

Then the Tunnel Opens Into the Cave

At the bottom, the enclosed tunnel suddenly gives way to a natural opening in the cliffs.

You're standing inside Sunny Jim Sea Cave.

Through the cave opening you'll see ocean, rock and moving water.

The experience changes depending on:

• The tide
• Wave conditions
• Sunlight
• Time of day
• Marine conditions

Some visits are calm.

Others remind you very quickly that you're standing inside a cave connected directly to the Pacific Ocean.

So Why Is It Called "Sunny Jim"?

This is where the cave gets its wonderfully odd name.

When viewed from certain angles, the shape of the cave's ocean-facing opening resembles the profile of a human head.

The name is commonly attributed to L. Frank Baum, author of The Wonderful Wizard of Oz.

The opening reminded observers of the profile of Sunny Jim, a well-known advertising character of the era.

Once someone points it out, you can try to find the face yourself.

But Sunny Jim Isn't the Only Cave Here

This is another thing many visitors don't realize.

The sandstone cliffs along this section of La Jolla contain a series of seven sea caves.

They have names including:

• Sunny Jim
• Clam's Cave
• Arch Cave
• Shopping Cart
• White Lady
• Little Sister
• Sea Surprize

Sunny Jim is special because it's the cave visitors can access through the land tunnel.

The others are generally experienced from the water.

That's Why You See So Many Kayaks Offshore

Stand along the La Jolla cliffs and you'll often see groups of colorful kayaks paddling toward the caves.

They're exploring the same geological system from the opposite direction.

Depending on ocean and safety conditions, guided kayak tours may approach or enter portions of the sea caves.

That gives you two completely different ways to experience this part of La Jolla.

Which Is Better: The Tunnel or a Kayak Tour?

They're really different experiences.

The tunnel is quick, quirky and historically interesting.

You get the strange experience of entering a shop, disappearing underground and emerging inside a sea cave.

A kayak tour gives you the bigger coastal experience.

You're on the water beneath La Jolla's cliffs and can see more of the cave system and marine environment.

If you have time?

Do both.

Don't Leave After You Climb Back Up

This is where we think visitors make a mistake.

Sunny Jim Sea Cave isn't really a standalone attraction.

It's part of one of the best walking areas in San Diego.

Once you're back outside, continue exploring Coast Boulevard.

You're surrounded by some of La Jolla's most beautiful coastline.

Walk Toward La Jolla Cove

From The Cave Store, continue along the coastal walkway toward La Jolla Cove.

Along the way you'll find:

• Ocean overlooks
• Rocky cliffs
• Sea caves
• Pelicans and seabirds
• Sea lions
• Harbor seals nearby
• Beautiful views across the Pacific

This is one of those San Diego walks where you should deliberately avoid rushing.

Yes, You're Probably Going to See Sea Lions

La Jolla is famous for its marine wildlife.

Sea lions regularly gather around the rocky coastline near the Cove.

They're entertaining.

They're loud.

And occasionally they're very smelly.

They are also wild animals.

Give them plenty of space and never block their path to or from the ocean.

Then Keep Walking to Children's Pool

Continue south along the coastline and you'll eventually reach Children's Pool.

A seawall built to create a protected swimming area eventually produced an unexpectedly attractive resting place for harbor seals.

Today it's one of La Jolla's best-known wildlife-viewing areas.

Seasonal restrictions may affect beach access, particularly during harbor seal pupping season, so follow all posted signs.

Our Favorite Way to Experience Sunny Jim

Don't drive into La Jolla solely to spend 20 minutes inside the cave.

Build it into a larger afternoon.

1. Explore the shops and galleries in La Jolla Village;
2. Walk to The Cave Store;
3. Descend into Sunny Jim Sea Cave;
4. Walk the coastline toward La Jolla Cove;
5. Watch the sea lions;
6. Continue toward Children's Pool;
7. Grab dinner in La Jolla;
8. Finish with sunset over the Pacific.

That's a pretty great San Diego afternoon.

There's Another Hidden Gem Just Up the Hill

If you're already exploring La Jolla, consider adding Harper's Topiary Garden.

It's one of the earlier discoveries in our San Diego's Hidden Gems series.

A private hillside garden has been transformed into an extraordinary collection of sculpted shrubs and whimsical shapes.

Sunny Jim and Harper's make a wonderfully strange pairing:

A secret tunnel into a sea cave followed by a hillside full of giant plant sculptures.

That's exactly the San Diego we're trying to uncover with this series.

When Should You Visit?

Weekday mornings are especially good.

La Jolla becomes busy, particularly during weekends, summer and holidays.

Earlier visits generally mean:

• Easier parking
• Smaller crowds
• Cooler temperatures
• A more relaxed coastal walk

Cave conditions and the view can also change with tides and ocean conditions.

A Word About Parking

Here's the least mysterious thing about La Jolla:

Parking can be frustrating.

Street parking exists throughout the Village, but restrictions and time limits vary.

Paid parking garages are another option.

Don't waste half your afternoon circling one block hoping the perfect space magically appears.

Park a little farther away and enjoy the walk.

Is the Cave Good for Everyone?

Not necessarily.

The staircase is long, narrow and enclosed.

Visitors need to descend and then climb approximately 145 steps.

Anyone with significant mobility limitations, difficulty with stairs or discomfort in confined spaces should consider whether the experience is appropriate before purchasing admission.

Conditions can also be damp, so use the handrail and watch your footing.

What to Know Before You Go

• Attraction: Sunny Jim Sea Cave
• Location: The Cave Store, La Jolla
• Address: 1325 Coast Boulevard, La Jolla
• Experience: Hand-dug tunnel leading to a natural sea cave
• Stairs: Approximately 145
• Time needed: Roughly 20–30 minutes for the cave itself
• Best for: Couples, families with capable walkers, history lovers and curious travelers
• Pair with: La Jolla Cove, Children's Pool and La Jolla Village
• Planning: Check current admission, hours and conditions before visiting

Why Sunny Jim Made Our Hidden Gems List

La Jolla isn't hidden.

La Jolla Cove certainly isn't hidden.

But a tunnel descending through the sandstone underneath a little shop?

That's different.

It's weird.

It's historic.

It's slightly adventurous.

And it's the kind of experience you might walk directly past without ever realizing what was underneath your feet.

More than a century ago, someone decided to dig through a La Jolla cliff so visitors could walk into a sea cave.

Somehow, that tunnel is still here.

And you can still walk down it.

That's more than enough to earn a place on our Hidden Gems list.

🌴 Nancy's San Diego Hidden Gems

This article is part of our San Diego's Hidden Gems series — unusual places, neighborhood restaurants, secret bars, hidden trails, fascinating history and local experiences many visitors never discover.

After more than 25 years welcoming guests to San Diego, we've learned that sometimes the most memorable vacation stories start with a place that makes you say:

"Wait... there's a tunnel under that building?"

Discover the La Jolla Hiding Beneath the Surface

Absolutely visit La Jolla Cove.

Watch the sea lions.

Walk the coastline.

See the sunset.

But while you're there, walk through the little shop and take the staircase down.

At Nancy's Vacation Rentals, we love helping our guests discover both the famous San Diego and the places hiding right underneath it.

Find your San Diego vacation rental and start exploring beyond the obvious.

SEO Information

SEO Title:
Sunny Jim Sea Cave: La Jolla's Secret Tunnel to the Ocean

Meta Description:
Discover Sunny Jim Sea Cave in La Jolla, where a historic hand-dug tunnel and 145-step staircase lead from a small shop into a natural Pacific Ocean sea cave.

Suggested URL:
/blog/sunny-jim-sea-cave-la-jolla

Primary Keyword:
Sunny Jim Sea Cave

Secondary Keywords:
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Suggested Internal Links

• San Diego's Hidden Gems
• Harper's Topiary Garden
• La Jolla Cove Visitor Guide
• Best Things to Do in La Jolla
• Secret Swings of La Jolla
• Ho Chi Minh Trail
• Things to Do in San Diego
• Where to Stay in La Jolla

Featured Image Concept

A cinematic cutaway-style scene showing the entrance of a charming La Jolla coastal shop above ground, with a stone staircase descending through sandstone beneath it and opening dramatically into a glowing sea cave overlooking the blue Pacific. The image should immediately communicate that an extraordinary ocean cave is hiding underneath an ordinary-looking building.

Series Marker:
SAN DIEGO'S HIDDEN GEMS

Main Headline:
THE SECRET TUNNEL
BENEATH LA JOLLA

Supporting Line:
Sunny Jim Sea Cave • La Jolla

Bottom Hook:
145 Steps • Hand-Dug Tunnel • A Sea Cave at the Bottom