There is a legend that over 1000 years ago, around B.E. 1454, Venerable Phra Maha Kassapa Thera and King Achutarat, a ruler of Yonok Nakkaphan, and their officers had propitiated the relics which were brought from India to be enshrined on this hill.
Many 'Tung' or religious flying flags, some as long as 1000 wa were flown on the hill top. The rims of the flags were waving in the rea demarcating the holy area on this hill (Doi). From then on, the hill has been call 'Doi Tung' to date, Phra That Doi Tung is the first chedi of Lanna. Tung is a dignified and auspicious identity of Lanna. Later in B.E. 2470,
Kruba srivijaya had the stupa renovated with the Lanna are style. The new structure was then built to cover the original one inside.
credit : signed board Wat Phra That Doi Tung