’Nam Phu’ means ’fountain’ – or in this case ’geyser’ – and ’Chet Si’ means ’7 colours’. This bejeweled waterfall is located in the area of KM 42 of the Chiang Mai – Phrao Road in Ho Phra Sub-district, Mae Taeng District. It is a mineral geyser containing calcium-carbonate, gushing from the ground and then overflowing streams and small waterfalls.
Its streambed is solid white, glittering crusted with calcium carbonate. Sunshine reflected from the clear flowing and falling water, as well as the white stream bed, makes for quite impressive natural scenery.