[Composed 1/5/2026]
I have a weakness for brown signs. You know the ones — those little
brown highway markers that flag a historic site, a scenic overlook,
some monument you've never heard of. Sure, most just hand you a
plaque and a "huh, cool." But once in a while, one scores: something
unforgettable. Either way, I've never seen one I didn't want to
follow.
This stretch of Maui's southern coast had three of them
lined up at once: the old
King's Highway,
a monument
to the first European to set foot on the island, and — the one I
really wanted — a
lighthouse
at the island's dry southern tip. A brown sign hat trick.
I have a thing for lighthouses. A good one is an engineering
marvel: the same brutal problem — keeping ships off the rocks —
solved and re-solved for centuries, built to shrug off the worst the
ocean can throw at it. I wasn't sure what this one had been built to
weather, but I was eager to stand before it and size it up.
Getting there meant a drive to the literal end of the road: Makena
Alanui Road runs south past La Pérouse Bay until the pavement gives up,
and you park. From there, you'll find the trail head for the
Hanomanioa
Light Trail, which doubles as the approach to the
Hoapili Trail —
that old King's Highway — brown sign number two. The second half of the
Light Trail overlaps the Hoapili Trail, so chasing a
lighthouse comes with the privilege of setting foot on a royal road
laid down five centuries ago (more on that below). The path is
well-marked the whole way and hugs the shoreline, with open-ocean views
at nearly every step. Spoiler: we never reached
the lighthouse.
Terrain: the rocky road ahead
The footing is the first thing you notice. The trail starts over
stark black lava rock, the path threading between the shoreline
and the lava flow, with the occasional pocket beach breaking up the
trail. It's raw and gorgeous and not remotely gentle — so pro tip:
wear closed-toed, sturdy shoes.
We wore trail runners and were perfectly
happy. Oh, and don't forget the hat and sunscreen; the same overcast
day that made
our
beach visit earlier in the day feel forced almost certainly saved us from
heatstroke out on the black rock.
One of the first questions I had out there was: how old is this lava
we're wandering over? Ten years? Ten thousand? You'd think, in the age
of GPS satellites and carbon dating, we'd know. We don't — and there
are three serious answers, none of which agree.
Ask Hawaiian
oral tradition and you get one number: accounts collected in 1841
had people saying their grandparents watched this flow happen — which
points to roughly A.D. 1750. Ask the
European
charts and you get another: the flow shows up somewhere between La
Pérouse's 1786 survey and Vancouver's 1793 one, which is where the
popular "1790" date comes from. Ask the
laboratory
— radiocarbon dating, calibrated, plus paleomagnetic work — and you get
a third answer entirely: somewhere around A.D. 1480 to 1600, two or
three centuries earlier than the signs claim.
What I love is that this isn't a "science versus myth" story. All
three are real, careful attempts to answer the same question, and the
USGS
itself takes the oral history seriously, noting that it "is
important and not to be overlooked among the numbers from
laboratories." We were standing on the evidence of an obviously
dramatic event, in the era of science, and the honest answer to "when
did this happen?" is still: nobody's quite sure.
History: the village that was here
As you walk, you start seeing it. Lava rock carefully arranged. Is
that a wall? The remnant of a house? Ooh, maybe a platform for
religious ceremonies? Every time I saw this obvious order, I had
the same question: what am I looking at? Alas, there's no placard,
no sign, no QR code to scan. Nothing to tell you.
What's up with this? Are these not of archaeological value? Maybe
it's just local teens goofing around, stacking stones. Or maybe
it's some grand mystery: Babe, we just found Hawaii's
Stonehenge. The signs told us this was a historic location — so
maybe the rock structures themselves are the puzzle.
A bit of research put these theories to rest. There were no
signs, but plenty of answers. This stretch of coast
is Keoneʻōʻio, and the rocks aren't random. They're the
stone bones of a Hawaiian settlement — house foundations, fishing
shrines, salt pans. Even the clusters that puzzled me have a
name: kauhale, the Hawaiian household, which wasn't a
single building but several, each with its own purpose. One reason
for the sprawl: under the
ʻai
kapu, men and women ate in separate houses — a husband cooked
two ovens, one for his wife and then one for himself in the men's
eating
house. It's kashrut
meets
the mechitza,
ancient Hawaiian style. A home was a compound, and a compound leaves
a lot of walls.

And here's the kicker. The man whose monument waits at the end of this
hike — La Pérouse — walked this exact shore in 1786 and found it
alive. In his journal the huts ran "along the seashore," so
many that "one might mistake an area of three or four leagues for a
single village," the people paddling out to trade "pigs, sweet
potatoes, bananas, [and] taro." So when did that thriving place
empty into the silent rubble I was stepping over? Maddeningly, the
question loops right back to the rock. If the lava is as old as the
science says, these are very likely the remains of the very village
La Pérouse described, raised on stone that had cooled centuries
earlier. If you believe the "1790" on the signs, the story turns
darker and murkier. I can't settle it — the same
unanswerable when? that hangs over the lava hangs over the
ruins. I never got my placard, but I got plenty of answers.

The trail itself is the headline artifact. This is a remnant of the
Alaloa o Kihapiilani — the King's Highway — first built in
the 16th century under Piʻilani, the chief who unified Maui's
districts. In its day it ran clear around the island, reserved for the
aliʻi — Hawaiʻi's ruling chiefs. In the 1820s, Governor Hoapili rebuilt
sections of it for horses and carts, which is how it got the name
everyone uses today. He did it with convict road gangs — many of them
sentenced for adultery — which earned the project its nickname,
the road that sin built. So you're walking a royal road, cut
by a lava flow, rebuilt by a governor, and now reclaimed by the wind —
layers of time stacked under your boots.
Wildlife: feral and wild, both hiding in plain sight
Two creatures stood out this trip. One is a story about people. The
other is, no exaggeration, one of the toughest animals on the planet.
First, the goats. I had no idea they were coming — we rounded a stretch
of trail and there they were, picking their way across the lava. My
instinct was that they weren't wild — somebody's animals, surely,
ranging out from a farm. I even gave them a job: aren't goats basically
a low-tech lawnmowing service? Wrong.
They're neither pets nor wild natives. They're feral, and the
backstory is colonial. Goats
first
came ashore with Captain Cook in 1778, with more added over the
following decades. With no predators and a breeding cycle that runs
to two sets of twins a year, they did what goats do — today feral
goats rank among the most destructive introduced herbivores in the
islands. The ones picking across the lava in front of us were, in
all likelihood, descendants of those first shipboard
arrivals. That's what stuck with me: not an invasive-species
statistic so much as living history — the still-unspooling aftermath
of a decision made on a deck in the 1700s.
And then there's the animal that caught my eye in the moment, yet
has a story that goes far beyond what I imagined.
Down at the waterline, clamped to the rocks in the spot where the
waves hit hardest, were dark, low, dome-shaped little creatures. I
gave them a glance and a guess: limpets. I thought back to the
survival TV shows where contestants harvest and eat these
easy-to-collect shellfish. Turns out the eating part was right; the
identification was way off.

It's not a limpet at all. It's a sea urchin — the helmet urchin, or
hāʻukeʻuke (Colobocentrotus atratus). What looks
like a smooth tiled dome is actually its spines, flattened and fused
into armor plating. In my defense, when I think sea urchin, I think
spiny critter on the sea floor, ready to pierce your foot with its
medieval — yet effective — defense system. These take sea-urchining to
a whole new level. Their superpower: this thing lives in the single
most violent real estate on the whole shore, the wave-impact zone
where almost nothing else can hold on. It resists being torn off at
water speeds up to about 27.5 meters per second — a gale strong
enough to uproot trees. A normal spiny urchin gets ripped away above
7.5. The trick is tube-foot adhesion roughly three times stronger
than an ordinary urchin's, plus that dome shape, which takes the
sideways shove of a wave and redirects it into a downward press. The
harder the wave hits, the harder it clamps down.
Which brings us back to my limpet hunch. I was wrong about the
animal and I missed the engineering entirely — but the one thing I
guessed, that people surely ate these, was right. Per archaeologist
Marshall Weisler's 25-year dig on west Molokaʻi — more than 185,000
urchin fragments, published in the
Journal
of Island and Coastal Archaeology — hāʻukeʻuke wasn't a snack. It
was a staple, supplying over 80% of the fat and nearly 40% of the
protein of all the shellfish at those ancient sites. The roe was a
delicacy rich in vitamins the taro-and-sweet-potato diet ran short on.
The spines got faceted into abraders for the final smoothing of bone
fishhooks. The shape really is practical.
A clever detail: Weisler could reconstruct the size of a harvested
urchin from its mouthparts — its "Aristotle's lantern" — the way you
might estimate a person's height from a single femur. Run that
across the sites and a pattern falls out. The big ones were placed
on shrines. The small ones ended up in the kitchen midden. Food,
tool, and offering, all from the little black dome one could easily
dismiss.
The gods say no
After crossing lava and beach, you finally arrive at the
official Hoapili
Trail - Trailhead. Here, the trees fade away and it truly is
lava rock in every
direction. Zoom
out on Google Maps and you realize you're entering a mile-wide
lava flow — its edge as clear today as it was in the
1700s, or the 1400s, or whenever the lava was last hot.
We were now a mere half mile from the lighthouse. We were home free
— or so I thought. As we walked, storm clouds gathered in
the west. Then some drizzle. Then rain. With zero cover, Shira wasn't
having it — and I had to admit I didn't know what kind of storm was
rolling in. Could we sprint the last quarter mile and snap a picture
of Hanomanioa Light?
No, we decided. The prudent choice was to retreat. By the time we
made it back to the Hoapili Trail head, the clouds had cleared and
the weather was back to being perfect. Clearly, the gods wanted us
to avoid Hanomanioa Light, and it was best to simply take the hint.
The less poetic version, which I only pieced together once I got home:
this dry southern tip sits in Haleakalā's rain shadow, sheltered from
the trade winds that soak the rest of Maui — which is exactly why the
lava out here is desert. Serious weather does reach it, but rarely, and
it comes from the opposite direction.
Kona
storms — kona is Hawaiian for leeward — are
the winter lows that reverse the trades and park over the islands
for days, pushing wind and rain in from the south and west and
turning the island's calm corner genuinely mean.
We caught nothing of the sort. What turned us back was a squall — a
few minutes of rain that blew through and cleared. But those clouds
stacking up in the West, they certainly seemed to mean business.
The man who said no
Before jumping in the car and leaving the
area, take
the short walk from the parking lot to the La Pérouse Monument.
Jean-François de Galaup, comte de La Pérouse, was the first European
known to set foot on Maui, in May 1786, at Keoneʻōʻio — the bay that
now bears his name. And here's why he's worth the stop. Explorers of
La Pérouse's era had a reputation for treating found lands as
discovered ones — something to be claimed. Today we recognize that
practice as cruel and deeply misguided. The surprising part: so did
La Pérouse. He explicitly refused to claim Maui for
France. He wrote:
"This European practice is too utterly ridiculous, and philosophers
must reflect with some sadness that, because one has muskets and
cannons, one looks upon 60,000 inhabitants as worth nothing, ignoring
their rights over a land where for centuries their ancestors have been
buried…"
Standing on a trail where the past keeps refusing to
resolve into a tidy answer, it's a good note to end on: exploration
didn't have to mean exploitation. One man, at the right
moment, knew exactly what he was looking at — and chose to leave it
alone. (More on him at
Images
of Old Hawaiʻi and the
La
Pérouse Headland memorial page.)
For those keeping track, I came up one brown sign short. We never
did reach the lighthouse. But as I was on a run, mentally editing
this blog post, it finally clicked. The thing I drive out to
lighthouses for — an engineering marvel built to take the ocean's
hardest blow and hold — I'd been crouched right over it on the
rocks, guessing it was a limpet. The helmet urchin was my
lighthouse. I just hadn't realized it at the time.
Tally it up: the King's Highway under my boots, the monument to the man
who said no, and an engineering marvel to rival the one I'd driven out
for. Two of three brown signs in hand, and nature quietly supplying the
third. Hat trick confirmed.
For the data-minded, here's the
full
Garmin track — distance, pace, and elevation: