Huai Sai Lueang Waterfall is a natural waterfall located in Doi Inthanon National Park, Mae Chaem District, Chiang Mai Province. It stands out with its distinctive creamy yellow rock layers formed by the local geology and minerals, creating a beautiful sight when water flows over them, and giving rise to its name "Huai Sai Lueang" (Yellow Sand Stream). The waterfall is approximately 15 meters high and 20–30 meters wide, with water flowing year-round. During the rainy season, the water volume is especially abundant and beautiful.

The area around the waterfall is managed by Doi Inthanon National Park Protection Unit An.3 (Mae Pan). It is surrounded by lush hill evergreen forests and pine forests, offering cool temperatures all year. From the parking lot, visitors can reach the waterfall in just a few minutes on foot, making it suitable for tourists of all ages, including seniors and families looking to relax amidst nature.

Nearby, there is a camping ground, restrooms, and recreational areas provided by the park, perfect for camping, stargazing, and experiencing the cool weather towards the end of the year. Visitors can also continue to the Mae Pan Nature Trail, one of Doi Inthanon's most popular trekking routes. It spans approximately 2.5–3 kilometers and takes about 2–3 hours to walk, passing through hill evergreen forests, rhododendron forests, mountain ridge grasslands, and a sea of mist viewpoint. It is open only from roughly November to May, and visitors must be accompanied by park staff or a local guide as per park regulations.

Additionally, Huai Sai Lueang Waterfall is not far from Mae Pan Waterfall Mae Ya Waterfall Phra Maha That Naphamethinidon and Naphaphonphumisiri Pagodas and Doi Inthanon Summit. Therefore, visitors can plan a continuous trip within a day or stay overnight to fully experience the nature of Doi Inthanon.

• From Chiang Mai city, take Highway 108 (Chiang Mai–Hot), then turn onto Highway 1009 towards Doi Inthanon National Park. When you reach the intersection to Mae Chaem District, take Highway 1192 and drive for approximately 6–7 kilometers. You will find a junction leading to Huai Sai Lueang Waterfall and Mae Pan Waterfall. Then, follow the park road to the park ranger unit, where a parking lot is located near the waterfall, allowing easy access on foot. It is advisable to check the road conditions with the park before traveling, especially during the rainy season.

• The waterfall is located near the park's camping ground, suitable for overnight stays and enjoying nature in the morning.

• If you wish to hike the Mae Pan Nature Trail, check its opening period and contact staff in advance.

• The rainy season is when the waterfall is most beautiful, but paths may be slippery. Wear appropriate hiking shoes.

• Prepare food, water, and essential supplies, as there are no large shops in the area.

• Help maintain cleanliness and take all trash out of the park area.

Admission Fee:

• Entrance fee to Doi Inthanon National Park applies (Thai citizens: Adults 60 Baht, Children 30 Baht / Foreigners: Adults 300 Baht, Children 150 Baht). The pass or receipt from the Doi Inthanon National Park entrance gate can be used.

Opening Hours:

• Open daily from 08:00–16:30. However, some areas or the camping ground may be temporarily closed during the rainy season or unfavorable weather conditions for visitor safety.