Phu Phan National Park

Phu Phan covers about 660 square kilometres of the sandstone range that separates the Sakon Nakhon basin from the rest of Isan. Its distinctive features are erosional: Saphan Hin, a natural stone bridge formed where softer rock weathered from beneath a harder slab, and Pha Nang Merng, a cliff viewpoint over the plain, along with waterfalls and rock formations through the forest. A royal palace, Phu Phan Ratchaniwet, was built at the foot of the range partly as part of the state's engagement with the region. Facilities are basic and the park sees few foreign visitors.

History

The range's isolation has long made it a hiding place. During the Second World War Seri Thai resistance fighters stored weapons in a cave still known as Tham Seri Thai (Wikipedia, Phu Phan National Park).

What's there

• Saphan Hin - the natural stone bridge left by differential weathering.
• Pha Nang Merng - the cliff viewpoint over the Sakon Nakhon plain.
• The forest range - sandstone hills dividing the basin from the rest of Isan.
• The waterfalls - running from July to November.

When to go

November to February for the weather; waterfalls run from July into November. Trails are muddy in the rains.

Before you go

Basic facilities and limited English interpretation. The rock formations are modest rather than spectacular. Few foreign visitors and little tourist infrastructure. Foreign entry fees are higher than Thai.

Nearby

Sakon Nakhon and Nong Han lake are north-east; Kalasin is south-west.

Key facts