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Sak Yai Giant Teak

The largest teak tree in the world, about 1,500 years old, with a canopy walkway built alongside it.

Updated 28 August 2026

Typenotable tree
WhereUttaradit
Nearest cityNam Pat about 25 km; Uttaradit about 90 km
Best seasonNovember to February
Time to allowTwo hours
Getting thereTon Sak Yai Forest Park, Nam Pat district, Uttaradit; car, then a walk of about 500 metres
EntrySmall charge

The tree stands in Klong Tron forest in Nam Pat district and is generally described as the largest teak in the world - now about thirty-seven metres tall after a storm tore off its top (it stood roughly forty-eight metres before), with a girth of roughly ten metres, and estimated at about 1,500 years old, though age estimates on tropical hardwoods are approximate. It was found in 1927 during logging survey work and protected afterwards, at a time when Thailand's teak was being cut heavily for export; commercial logging in natural forest was banned nationally in 1989. A walk of around five hundred metres through forest leads to it, with a raised canopy walkway built alongside so visitors can see the crown from height rather than only the trunk. The tree has been damaged by storms - a major limb came down some years ago - and is monitored. The forest park around it is quiet and gets few foreign visitors, being a long way off the main routes.

Highlights

  • The tree - about thirty-seven metres now (48 m before storm damage) and ten metres in girth, roughly 1,500 years old.
  • The canopy walkway - raised structure giving a view of the crown.
  • The forest walk - about five hundred metres through Klong Tron forest.
  • The logging history - found in 1927 and protected as the teak was cut around it.

When to go

November to February for the weather and the trail. It is a long way from the main tourist routes and gets few visitors at any time.

Good to know

Remote - a long drive from anywhere with little else nearby. It is one tree and a walkway; two hours covers it. Storm damage means the crown is not what older photographs show.

Nearby

Phu Soi Dao is north-east; Uttaradit town is south-west.

What to pack for Sak Yai Giant Teak

Chosen from what this place is for. Tap a kit for the full checklist.

  • Broken-in walking shoes or boots - Grip and ankle support matter more than looks; never hike in brand-new boots. Find on Amazon
  • Layers + a waterproof shell - Mountain weather turns fast; a packable rain jacket saves the day. Find on Amazon
  • Daypack with rain cover - 20-30 litres holds water, snacks, layers and a first-aid kit. Find on Amazon
  • Offline maps + a power bank - Download the trail before you lose signal; carry backup charge. Find on Amazon

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