№ 01Why stop at Nam O instead of riding straight up the pass

Every rider heading for the Hai Van Pass goes through it. The road runs along the last flat kilometre before the mountain, past a fishing harbour, a market and a headland of black rock, and almost nobody stops, because the pass is right there and the pass is the point. Which is a pity, because Nam O is one of the oldest villages on this coast — settled after Princess Huyen Tran’s marriage to the Cham king opened the land south of the pass to Vietnamese settlers in 1306, which makes it two centuries older than Hoi An as a port — and it has kept three things the coast has otherwise lost.

The first is a reef. The headland is a shelf of dark rock that the sea covers twice a day, and for about eight weeks after Tet it grows a carpet of bright green sea moss that the whole of Da Nang comes to photograph at dawn. The second is fish sauce: the village has made nuoc mam from anchovy and salt in wooden jars for several hundred years, the craft was inscribed as national intangible heritage in 2019 (Tuoi Tre reported the listing), and the bottle you carry home from here is the one central Vietnamese cooks mean when they say “real fish sauce”. The third is a story — for most of the twentieth century this was the firecracker capital of Vietnam, until a single government decree in 1994 silenced it overnight. You can still meet people who rolled the fuses.

№ 02The ride to Nam O: coast road to the foot of the pass

From our shop at 84 Phan Chau Trinh it is 42 km and about 55 minutes: the coast road north through Da Nang — Lac Long Quan, Vo Nguyen Giap, over the Thuan Phuoc bridge at the river mouth — then Nguyen Tat Thanh along Da Nang bay for 12 km with the water on your right and the Hai Van ridge growing in front of you, until the road swings inland to meet QL1A at the village. The village is the cluster of lanes between the highway, the railway and the sea; the reef is at the headland on its north side, where Nguyen Tat Thanh ends. Our Hoi An to Da Nang guide covers the first 30 km.

Getting to the rocks is the only fiddly part. The headland and the beach either side of it sit inside the fence of a long-stalled resort project (more on that in section 08), but the city required the developer to keep five public paths to the sea, and the ones that matter are at the very end of Nguyen Tat Thanh, by the fishermen’s shrine, and on the north side of the cape. Ride to the end of the bay road, park with the local bikes by the lane into the fishing village for a few thousand dong, and walk the last two hundred metres. Nobody charges to go onto the reef.

№ 03The reef: eight green weeks a year

Ran Nam O — the Nam O reef — is a shelf of dark rock running out from the headland into Da Nang bay, cut by channels and pools, with the outline of the Hai Van Pass climbing straight out of the sea behind it. For most of the year it is a fine place to watch fishermen work the rocks at low tide and the sun come up over the bay. For about two months it is something else. From early February to April the shelf grows a dense, velvet moss of green algae, and at low tide, at first light, the whole reef glows: emerald rock, black channels, the sea pouring white through the gaps, the mountain behind. It is the most photographed natural event in Da Nang — Tuoi Tre’s April 2026 feature has the pictures — it lasts a matter of weeks, and it is free.

Timing is everything. The moss is only visible when the tide is out, and in this season the low tides that matter fall around dawn, so the photographers are on the rocks by 05:30 with headtorches and the light comes at about 06:00. By 08:00 the tide is back over the moss and the show is over until tomorrow. Check a Da Nang tide table the night before — you want the water at its lowest between 05:00 and 07:00 — and wear shoes with grip: the moss is as slippery as it looks, and the rock under it is sharp. The same weeks are seaweed-harvest season, when Nam O women are out on the shelf at low tide cutting the moss into baskets to sell as rong bien; step around them.

№ 04The Nam O fish sauce village

Every lane here smells faintly of it. The nuoc mam is made the way it has been for centuries, and the recipe is short: three parts anchovy to one part salt, nothing else, twelve months in the dark. The fish is ca com than, the small black-backed anchovy netted off this coast in the third lunar month, when the fat content is highest; the salt is coarse sea salt from Sa Huynh or Ca Na, bought a year ahead and left to drain so it loses its bitterness. Fish and salt are layered into chum — jars of jackfruit wood or glazed clay holding 200 to 300 kg — weighted with a lattice of bamboo and river stones, sealed, and left in a shed through a full cycle of summer heat and winter damp. Nothing is added and nothing is stirred. After twelve months the jar is tapped from the bottom, the first draw filtered slowly through a cloth, and each jar gives 100 to 150 litres of a sauce the colour of dark amber, thick on the tongue, sweet-salty, and, for the first time if you are used to the industrial kind, recognisably made of fish.

About a hundred households still make it, producing somewhere between 50,000 and 100,000 litres a year, and in August 2019 the Ministry of Culture inscribed the craft on the national list of intangible cultural heritage — one of a handful of fish-sauce villages in the country still working the old way. It is not a museum: the sheds are family yards, the jars are behind the houses, and the way in is to walk the lanes off the market with your nose, find an open gate with jars in it, and ask.

Twelve months in a wooden jar, and the only ingredients are the fish, the salt and the patience. Everything else on the supermarket shelf is a shortcut.

№ 05Buying Nam O fish sauce, and what to look for

A litre of first-draw sauce costs about 60.000₫ to 100.000₫ at the maker’s door, depending on the house and the year, and a good deal more in Da Nang’s tourist shops with a ribbon on it. Look for a sauce that is clear and dark amber when you hold the bottle to the light, not cloudy and not pale; smell it — it should be rich and briny, not sharp — and if the maker offers a taste on a fingertip, take it. Ask for nuoc mam nhi, the first draw, which is what you want for dipping; second-draw sauce is for cooking and cheaper. Several families now bottle under their own labels with proper seals, which is what to carry home; loose sauce in a re-used water bottle is for the neighbours.

Two practical notes. Fish sauce is a liquid over 100 ml, so it goes in checked luggage, double-bagged — a broken bottle in a suitcase is a story you will tell for years. And buy it in the village, not at the reef or the highway: the makers’ houses are in the lanes behind the market, where the price is the maker’s and the sauce has not been cut with anything on its way to a shelf.

№ 06The town that made Vietnam’s firecrackers, and the day it stopped

There is a second craft in the story, and it explains why the village feels the way it does. Generations ago a craftsman named Ngo Mai, remembered as Cuu Mai, came up from Quang Ngai and taught the village to roll firecrackers. By the twentieth century the village’s phao — red-paper crackers in strings from a hand’s length to a metre, fired at Tet, weddings and openings — were the most famous in Vietnam, and most of the village’s families lived by them. Every autumn the lanes filled with the smell of gunpowder and the sound of children rolling paper tubes; every Tet the country lit what the village had made.

On 8 August 1994 the prime minister signed Directive 406, banning the production, sale and use of firecrackers nationwide from 1 January 1995, after a run of factory explosions and holiday injuries. Here it ended a livelihood in one winter. The village went back to the sea, and to the fish sauce it had always made on the side, and the sheds that had stored gunpowder filled with jars of anchovy. The old firecracker makers are in their seventies and eighties now; ask at the market and someone will point you to one, and the story comes with a grin and a shake of the head. It is the reason there is a fish sauce village at all: the ban did not kill the town, it turned it back into what it had been in 1306.

№ 07Goi ca Nam O: raw fish, done properly

The village’s other name on menus across Da Nang is goi ca Nam O, the raw fish salad that is the village’s own dish and the reason Da Nang people drive out here on Sunday mornings. Fresh sardine or herring — ca trich, sometimes anchovy — is filleted, briefly cured in lime and salt, then either served “wet”, in a bowl of its own fermented dressing thickened with roasted rice powder, peanut and chilli, or “dry”, tossed in the same powder and eaten as a wrap. Either way it comes with a mountain of wild herbs from the Hai Van slopes — rau rung, the bitter, aromatic leaves that are half the point — plus green banana, cucumber, star fruit, mango and toasted rice paper, and it is eaten rolled, dipped, and washed down with something cold.

The classic place to eat it is not a restaurant. Mrs Tran Thi Hoa has carried a shoulder-pole of goi ca to the market every morning for more than thirty years, selling from about 07:00 until she moves on to Hoa Khanh market at 10:00, at 20.000₫ to 30.000₫ a portion — six kilos of fish on a weekday, twelve on a Sunday. Sit on a stool beside her. The sit-down goi ca restaurants along QL1A and the lanes charge 50.000₫ to 80.000₫ for a bigger plate with beer service, and are the answer at lunchtime. Raw fish is raw fish: eat it in the morning, from a busy stall, and you will be fine, as several million Da Nang residents are every year.

№ 08Shrines, wells and the resort question

Walk the village and you walk through its seven centuries. The mo tien hien, the tomb of the founding settlers, stands by the old road; there is a shrine to the goddess Lieu Hanh on the headland, a whale temple where the village buries and honours the stranded whales it regards as its guardians, an ancient square-mouthed well of the kind the Cham dug along this coast, and the village dinh where the Cau Ngu fishing festival is held early in the lunar year, with boat races off the beach. None of it is signed in English and none of it charges; all of it is a few minutes’ walk from the market.

And then there is the fence. In 2010 the headland, the beach and a slice of the village were handed to a developer for an eco-resort, the residents were moved back from the shore, and the project stalled for a decade behind hoardings while the village watched its beach disappear — Nam O da chet, “Nam O is dead”, ran one famous headline. In 2020 the city cut the project’s land back, took the cape itself out of it altogether and made the company keep five public paths to the sea, pay for parking and toilets and leave the shrines alone; the scheme was relaunched as a Bill Bensley-designed resort and has been building slowly since. What that means for you in 2026 is that the reef is open, the paths are open, and the fishing village behind the fence is very much alive — but the beach either side of the headland is a construction site, and the view from the rocks now includes cranes. Go for the reef, the sauce and the village, not for a beach day.

№ 09Pairings, timing and which bike for Nam O

This is a stop, not a destination, and it pairs with everything north of Da Nang. The obvious plan is to fold it into the Hai Van Pass: leave Hoi An at 06:00, walk the reef at 07:00, eat goi ca at the market, buy your bottle, and be climbing the pass by 09:00 with the truck traffic still light. Coming the other way, it is the last stop on the descent from Hue or Lang Co before the city. And in moss season it is a dawn trip on its own: ride up in the dark, an hour on the rocks, breakfast, and back in Hoi An by 10:00 with the day still ahead.

The coast road is flat the whole way, so any bike in our fleet does it — a 50 cc or an electric scooter reaches the village and back on one charge (85 km round trip) if you are not continuing up the pass; for the pass itself take a 125 cc automatic or a Honda semi-automatic. Fill up in Da Nang; there are stations on Nguyen Tat Thanh and at the QL1A junction. And carry cash: the makers, the market and the crab women take nothing else.

№ 10FAQ

How far is Nam O from Hoi An by motorbike?

Nam O is about 42 km from Hoi An Old Town by the coast road through Da Nang and along Nguyen Tat Thanh on Da Nang bay, roughly 55 minutes on a scooter. It sits at the foot of the Hai Van Pass, 12 km below the Hai Van Quan gate, so it is a natural first stop on the way up.

When does the Nam O reef turn green?

The moss on the Nam O reef appears from early February to April, roughly the eight weeks after Tet, and is only visible at low tide. In that season the useful low tides fall around dawn, so be on the rocks by 05:30 and expect the water back over the moss by about 08:00. Check a Da Nang tide table the night before.

Is there an entrance fee for the Nam O reef?

No. The reef and the headland are public, and although a resort project surrounds them the city requires five open paths to the sea. Park with the local bikes by the lane into the fishing village at the end of Nguyen Tat Thanh for a few thousand dong and walk the last two hundred metres.

How much does Nam O fish sauce cost?

At the door of the maker, in the village, first-draw Nam O fish sauce costs about 60.000₫ to 100.000₫ a litre, depending on the house. Ask for nuoc mam nhi, the first draw, and choose a sauce that is clear and dark amber against the light. Tourist shops in Da Nang charge considerably more for the same bottle.

Why is Nam O fish sauce famous?

Nam O has made fish sauce for several hundred years using only black anchovy and coarse sea salt in a three-to-one ratio, fermented for twelve months in wooden or clay jars with nothing added. About a hundred households still make it, and the craft was inscribed on the national list of intangible cultural heritage of Vietnam in August 2019.

Where do I eat goi ca Nam O?

At Nam O market in the morning: Mrs Tran Thi Hoa has sold raw-fish salad from a shoulder-pole there for more than thirty years, from about 07:00 until 10:00, at 20.000₫ to 30.000₫ a portion. The sit-down restaurants along QL1A and in the lanes serve bigger plates for 50.000₫ to 80.000₫ at lunch and dinner.

Can I visit Nam O on a 50 cc or electric scooter?

Yes, if Nam O is the destination: the coast road from Hoi An is flat all the way and the 85 km round trip is within one charge of a VinFast electric scooter or an easy day on a 50 cc. If you are continuing up the Hai Van Pass, take a 125 cc automatic or a Honda semi-automatic instead.

Distances were measured on the road from 84 Phan Chau Trinh, Hoi An, to the end of Nguyen Tat Thanh at Nam O; riding times assume a scooter in normal traffic. Fish sauce production figures and the 2019 heritage listing follow Tuoi Tre and Tien Phong reporting; the moss and crab seasons follow Tuoi Tre and Thanh Nien features of 2025–26; the firecracker history follows Bao Da Nang and the 1994 directive; the resort’s public-access conditions follow the developer’s own 2020 statement. Prices are what riders and neighbours have paid and will drift. Anh Khoa sells no fish sauce and has no arrangement with any maker; walk the lanes and choose your own.