Plain of Jars Travel Guide: Laos' Megalithic UNESCO Mystery
The Plain of Jars is one of South-East Asia's great archaeological mysteries — a 2,000-year-old UNESCO World Heritage landscape of more than 2,100 carved stone jars scattered across 90 megalithic sites on a windswept plateau in northern Laos. The largest jars stand 3m tall and weigh up to 25 tonnes. Nobody knows for certain who carved them or why. Reached from Phonsavan in Xieng Khouang Province, the Plain of Jars is the country's most extraordinary off-the-beaten-track destination — and an unforgettable addition to a deeper Laos itinerary.
Explore Tweet World Travel Laos Small Group Tour or contact Tweet World Travel for a tailor-made travel experience.
History & Cultural Influence
The jars date to the Iron Age — between 500 BCE and 500 CE. Most researchers now believe they were funerary urns used by an unknown but sophisticated megalithic civilisation. Cremated human remains, bronze ornaments and glass beads have been found at several sites. The civilisation appears to have abandoned the jars suddenly around 500 CE; the people who later settled the Xieng Khouang plateau (the Lao Theung and Hmong) had no oral memory of who made them.
The Plain of Jars is also one of the most heavily bombed sites in human history. During the "Secret War" (1964–1973), the US dropped more bombs on this plateau than on all of Europe in World War II — over 2 million tonnes of ordnance, an average of one B-52 planeload every 8 minutes for 9 years. Approximately 30% of those bombs failed to explode and 80 million remain in the soil today. Unexploded Ordnance (UXO) clearance has reopened only seven jar sites to visitors; UNESCO inscribed Xieng Khouang as a World Heritage Site in 2019, finally giving the site the global recognition it deserves.
Quick facts:
UNESCO status: World Heritage Site, inscribed 2019
Location: Xieng Khouang Province, northern Laos
Distance from Vientiane: 370 km — 40 minutes by air to Phonsavan, 10 hours by road
Distance from Luang Prabang: 270 km — 30 minutes by air, 8 hours by road
Best for: archaeology, history, off-the-beaten-track travel, Secret War remembrance
Top Attractions
Site 1 (Ban Ang) — the largest cluster — 334 jars including the famous 3m "King's Jar"; closest to Phonsavan.
Site 2 (Hai Hin Phu Salato) — 90 jars on a forested hillside; quieter and atmospheric.
Site 3 (Hai Hin Lat Khai) — 150 jars; reached via a beautiful walk through Hmong villages and rice paddies.
Mulberries Silk Farm — Hmong-led silk-weaving cooperative; supports community livelihoods.
MAG (Mines Advisory Group) Visitor Centre — the city's essential museum on the UXO legacy and ongoing clearance.
Hmong New Year villages — visit traditional Hmong villages around Phonsavan, especially during December–January festivals.
Tham Piu Cave — 90 minutes away; cave where 374 villagers were killed in a 1968 US air strike; now a memorial.
Must-Try Dishes
Khao soi Phonsavan — Xieng Khouang-style noodle soup with minced pork, tomatoes and chilli.
Larb gai — chicken larb with mountain-region herbs and chillies.
Hmong steamed corn cakes — a Hmong staple eaten with chilli paste.
Sticky rice with bamboo shoots — highland mountain cooking.
Mulberry-leaf tea — a Mulberries Silk Farm specialty drink, made from silk-worm-feeding mulberry leaves.
Festivals & Local Celebrations
Hmong New Year — December: colourful three-day festival with traditional Hmong games, courtship rituals and embroidered finery.
Pi Mai Lao (Lao New Year) — 13–16 April: water festival; cooler than the lowlands.
Boun Phasouk Hai Hin — varies: a community festival at Site 1 with cultural performances.
Mulberries Silk Festival — November: celebrates the area's silk-weaving heritage.
UXO Awareness Day — 7 December: commemorates Laos' bombing legacy.
What to Do
Visit Site 1, Site 2 and Site 3 in a single day — your hotel arranges a car-and-guide.
Visit the MAG Visitor Centre before touring the jars — essential context on the UXO legacy.
Visit a working Mulberries silk farm; buy fair-trade Hmong silk.
Visit Tham Piu Cave memorial for a sobering look at the Secret War's civilian cost.
Day-trip to a Hmong village during December–January New Year for the most authentic experience.
Stay overnight at the heritage Auberge des Plaines de Jarres lodge for atmospheric jar proximity.
Shopping
Mulberries Silk Farm shop — fair-trade Hmong silk scarves, table runners and dyed silk.
Phonsavan Night Market — Hmong embroidery, hill-tribe jewellery, simple souvenirs.
Lone Buffalo Restaurant boutique — community handicrafts from local cooperatives.
UXO Survivor Information Centre — jewellery made from defused bomb metal; proceeds fund clearance.
Weather: Best Time to Visit
November–February (Best): cool, dry; crisp mountain mornings (5–10°C), warm sunny afternoons.
March–May: hot dry season; hazy from agricultural burning.
June–September: rainy season; jars look greener but trails can be muddy.
October: cooling shoulder month; sometimes still wet.
Cultural Etiquette
Stay on marked paths at every jar site — UXO is still being cleared.
Do not climb on, sit in or touch the jars.
Photograph respectfully — no flash near the more fragile carved jars.
At Hmong villages, ask permission before photographing — particularly women in traditional dress.
Tip your guide USD 10/day and your driver USD 5/day.
Essential Travel Information
Getting there: Lao Skyway flies Vientiane to Phonsavan (40 minutes); Lao Airlines flies Luang Prabang to Phonsavan (30 minutes). Bus from Vientiane takes 10 hours; from Luang Prabang 8 hours.
Money: Limited ATMs in Phonsavan — bring cash. Cards work only at the main hotel.
Connectivity: Reliable 4G in Phonsavan; patchy at the rural jar sites.
UXO safety: Never stray from cleared paths marked by MAG (Mines Advisory Group). Markers: white = safe; red/orange = uncleared.
Visa: Visa on arrival is not available at Xieng Khouang Airport — arrive with a valid visa from Vientiane or Luang Prabang.
Where to Stay
Boutique heritage — Auberge des Plaines de Jarres (a 1970s-era French-style lodge with 15 cottages above Phonsavan).
Mid-range — Hillside Resort, Anoulack Khen Lao Hotel, Vansana Plain of Jars Hotel.
Standard — White Orchid Hotel, Phou Pha Daeng Hotel.
Where to base yourself: Phonsavan town is the gateway; Auberge des Plaines de Jarres offers the most atmospheric stay.
Explore Tweet World Travel Laos Small Group Tour or contact Tweet World Travel for a tailor-made travel experience.
Frequently Asked Questions
Helpful answers for travellers planning a Plain of Jars stop on a deeper Laos itinerary.
How long should I stay at the Plain of Jars?
Two nights is ideal — one full day for Sites 1, 2 and 3 plus the MAG museum; an optional second day for Hmong villages, Mulberries Silk Farm and Tham Piu Cave.
Is the Plain of Jars safe to visit?
Yes — all visitor-accessible sites have been cleared of UXO. Never stray from marked paths. The wider Xieng Khouang plateau still contains 80 million unexploded bombs.
Who made the jars?
Unknown. Iron Age archaeological evidence (500 BCE – 500 CE) suggests funerary urns by a now-vanished megalithic culture. Local Hmong oral history attributes them to giants who used them to brew rice wine.
When is the best time to visit?
November to February for cool dry weather — the highland plateau averages 5–15°C cooler than Vientiane.
Can I combine Plain of Jars with Luang Prabang?
Yes — fly 30 minutes from Luang Prabang to Phonsavan, spend 2 nights, fly back. This is the standard premium-tour itinerary.
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