Hin Ta Hin Yai: Visiting the Grandfather and Grandmother Rocks in Lamai
Hin Ta Hin Yai is a short stop, not a half-day out: most visitors spend 10 to 20 minutes on the rocks themselves, or 30 to 45 minutes if they also work through the market walkway and the surrounding coast. The two granite formations sit at the southern tip of Lamai Beach on Koh Samui's east coast, and entry to the rocks is free — you pay only for parking. This guide covers where the rocks are, how to reach them from Lamai and Chaweng, what you actually see on the granite shelf, and which nearby stops pair naturally with a visit.
What Hin Ta Hin Yai actually is
These are two natural granite outcrops on a polished rock shelf that slopes into the Gulf of Thailand, not a temple, park or museum. Their fame comes from their shape: Hin Ta, the Grandfather, juts upward above the water, while Hin Yai, the Grandmother, sits lower in a crevice of the same shelf. That resemblance is the entire draw, and it is why tour vans and scooter riders pull in throughout the day.
Set expectations accordingly. One first-hand account notes that the male formation is obvious while the female one is genuinely hard to pick out, so some visitors leave puzzled rather than amused. Treat the stop as a coastal curiosity with a good view rather than a sight that rewards a long stay.
Where the rocks sit
The formations occupy the rocky promontory at the southern end of Lamai Beach, signposted off the main ring road, Route 4169. The access lane is narrow but short — only a few hundred meters from the turn to the parking area. Once parked, you walk roughly two minutes to the rocks.
In island terms the location is convenient: Lamai Beach is about five minutes away by road, while Chaweng Beach is roughly 30 minutes. If you are basing yourself in Chaweng, plan the rocks as a stop on a Lamai day rather than a separate trip.
The Ta Kreng and Yai Riem legend
Local folklore gives the rocks their names. As the story goes, an elderly couple named Ta Kreng and Yai Riem sailed from Nakhon Si Thammarat to arrange a marriage for their Son in Prachuap Khiri Khan, and a storm capsized their boat off southern Samui. Unable to reach shore, they prayed to be turned to stone so their good intentions would stand as proof for the bride's family.
It is a legend, not history, and the sources that repeat it are travel sites rather than an official island authority. Knowing the outline still changes what you are looking at: the rocks read as a memorial to a promise rather than a geological joke.
Getting there and parking
A scooter or rental car is the simplest way in. Follow Route 4169 south past Lamai, watch for the signed turn, and take the narrow lane to the parking area at the entrance. Ride-hailing apps such as Grab work here too, with waits typically under 10 minutes in the Lamai area, though a return pickup from a rural coastal lane is less certain than a drop-off.
Entry to the rocks is free, but local landowners charge small parking fees, and published figures do not agree: one source lists ฿20 for scooters and ฿50 for cars, another reports ฿30 per car. Bring small notes and confirm the amount on the board at the entrance before you park.
What you see on the granite shelf
The shelf is broad, pale and polished, with the sea working at its edge. Hin Ta stands prominently over the water and Hin Yai rests in the rock crevice just below it. Beyond the two formations, the whole coastline is the real payoff — big smooth boulders and open Gulf views that photograph well in morning light.
The surface turns slick when spray or surf washes over it, so wear shoes with grip and keep back from the breaking waves when swell picks up. Walk a few meters along the shelf and the crowd thins quickly, which is where the site is at its best.
The walkway market and Kalamare
The path from the parking area to the rocks is lined with stalls selling Kalamare, Samui's chewy coconut caramel made from coconut milk, palm sugar and sticky rice flour. Vendors cook it in open woks and often offer wrapped pieces for tasting. It is the most local thing about the visit and the reason to slow down rather than sprint to the rocks.
Stalls also sell souvenirs and drinks, and the atmosphere is unapologetically touristy. Buy a packet of Kalamare to eat later rather than carrying it around a hot granite shelf all afternoon.
How long to allow
Budget 10 to 20 minutes if you want photos of the two rocks and nothing else. Add another 15 to 20 minutes for the walkway market, a Kalamare tasting and a wander along the coast, which brings a comfortable visit to 30 to 45 minutes.
Access is a daytime affair; sources describe daylight hours only and give differing closing times, so treat the site as open during the day and check the signage on arrival if you are coming late. There is no booking, no ticket window and no reason to build a schedule around it.
Swimming: the rocks versus South Lamai
Do not swim directly off the formations. The granite is slippery and the surge against the shelf is unpredictable, so this is a viewpoint rather than a swimming spot. The sand at South Lamai is a few minutes' walk away and is the better place to get in the water.
If a beach day is the plan, build it around Lamai Beach and treat Hin Ta Hin Yai as a 30-minute detour from the sand — the two sit within a few minutes of each other by road, so neither eats into the other. Our guide to Lamai Beach, Koh Samui: What It's Like and How to Visit covers the sand and nearby stops.
Nearby stops that pair naturally
Wat Ratchathammaram, known as the Red Temple, is under a kilometer away, and the Overlap Stones are roughly the same distance in the other direction. Lamai Night Market is about two kilometers off, which makes an easy evening pairing if you are staying in Lamai.
Further afield, Wat Khunaram and Silver Beach are around four kilometers away and slot into the same southern loop. Pick one or two of these rather than stacking them all into a single hot afternoon.
Is Hin Ta Hin Yai worth stopping for?
Stop if you are already driving the Lamai coast, enjoy odd roadside landmarks, or want an excuse to try Kalamare. The view is good, access is easy and the cost is trivial apart from parking.
Skip it if your time on the island is short, you want quiet coastline, or you were expecting a substantial attraction. It is a 20-minute photo stop with a market attached, and judged on those terms it delivers.
Should the rocks make your Lamai day?
Treat Hin Ta Hin Yai as a 30-minute addition to a Lamai day rather than a destination in its own right: park, walk the market lane, see the two formations, take in the coast and move on. Pair it with Wat Ratchathammaram or the sand at Lamai Beach to make the drive worthwhile.
Bring small notes for parking, wear grippy shoes, and go before mid-morning if you want the shelf to yourself. If you are still weighing where to base yourself, our Koh Samui attractions: plan a beach-led day of sightseeing lays out what each area offers before you commit.
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Frequently Asked Questions
Can you see Hin Ta Hin Yai without paying an entrance fee?
Yes. Access to the rocks themselves is free; the only charge is a small parking fee collected on the approach lane, and the amount varies by vehicle type and landowner, so check the sign at the entrance.
How far is Hin Ta Hin Yai from Chaweng?
Roughly 30 minutes by road, compared with about five minutes from Lamai Beach. If you are staying in Chaweng, combine the rocks with other Lamai-side stops rather than making a dedicated round trip.
Is Hin Ta Hin Yai suitable for a quick stop with a rental car?
Yes, provided you are comfortable on a narrow signed lane of a few hundred meters. Parking sits at the entrance and the rocks are about a two-minute walk from the car.