Si Lanna National Park is full of wildlife and verdant forests, which are the source of various tributaries of the Mae Ping River. The park is prestigious park to commemorate the 5th anniversary of King's birthday. The park was announced a National Park on the 1st August 1989 (B.E. 2532) on the King's multifarious duties, volume 106 section 120. It is the 60th National Park of Thailand. The park encompasses 1,406 km 2 , covering 3 Amphur of Chiang Mai province: Mae Taeng, Prao, Chiang Dao covers a mountainous area of 260,800 acres in Phrao, Mae Taeng, and Chiang Dao districts. The admission is 100 baht for adults and 50 baht for children. For more information, please call 0 2562 0760

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The park is surrounded by the valleys and a mountain chain lies from north to south. The source of Mae Ngad resirvoir is along with several brooks and creeks, which water rushes down from the valleys to Mae Ngad reservoir. Southwest of the brooks, the water rushes down to Mae Ping River.

Mon Hin Lai Waterfall, the 9-tiered waterfall is located in Mae Ngat Forest, Amphoe Phrao. It is full of water all year round and falls straight down off a mountain. The unique cascade has many outstanding tiers. The top tier, in particular, is an ideal viewpoint to observe the splendid landscape of Phrao district . To get there, drive on the Chiang Mai-Phrao road for 85 kilometres, turn left for 4 kilometres onto a dirt road. Only four-wheel vehicles can make the trip.

Mae Ngat Somboon Chon Dam is located at Km. 41 on the Chiang Mai-Fang route and then turn right for 11 kilometres. The area has a very scenic forest. Privately-run rafts and restaurants are available throughout the year. Other interesting sites in the area include Huai Mae Rangong Waterfall, Huai Pa Phlu Waterfall, Pha Daeng Cave, and Doi Mae Wa Hang Natural Study Trail (it is located around 4 kilometres from the National Park office).

Getting to the park office: Drive along Highway No. 107 (Chiang Mai-Fang route), and then turn right to Sombun Chon Reservoir for 12 kilometres (on the way, there are stalls selling scented lime). No accommodation is available, but camping can be done at Huai Kum camping area, which is located near the So Ro 6 Conservation Unit, Huai Kum around Km. 260 along Chiang Mai-Fang route.

Both sides of along Royal Road Number 1150 which are Mae Ngud Forest (Pao district) and Chiangdao Forest (Chiangdao district) are one of most fantastic scenery composing of abundant Moist evergreen forest alternated with high and steep limestone mountain range (Doi Phao Sam Sao Mountain Range).

Jedsi Spring is a cold-water spring about six meters wide plus eight meters long. The water runs from underground all the year round and consists of calcium that makes its color looks like the rainbow when touch the sunlight, so it is called Jedsi Spring (Rainbow Spring) by local people. The water runs on a stream about 100 meters to become Boutong Waterfall.

Boutong Waterfall, a three-level waterfall, is naturally beautiful. Its special thing is limestone stream in which traveler can enjoy walking without slipping over. Its source is Jedsi Spring.

Getting to the park office: Drive along Highway No. 107 (Chiang Mai-Fang route), and then turn right to Sombun Chon Reservoir for 12 kilometres (on the way, there are stalls selling scented lime). No accommodation is available, but camping can be done at Huai Kum camping area, which is located near the So Ro 6 Conservation Unit, Huai Kum around Km. 260 along Chiang Mai-Fang route.