An interesting "diversionary" route to the storage facilities in Phrae and Ayutthaya Provinces. Wiang Pa Pao is located on route 118 which links Chiang Rai with Chiang Mai thus by-passing most of Highway 1 with its known permanent road check-points. Then by using Routes 120, 103 and 101 Phrae can be reached. Continuing on 101 to Den Chai, route 11 is joined and thus an alternative route south to Ayutthaya, again avoiding most of Highway 1. Coincidentally, a similar haul of 6 million methamphetamine pills was seized last year in Wiang Pa Pao. (September 2022)
"Mae Suay police later stopped the other car on the highway between Tha Ko and Wiang Pa Pao....... the motorist abandoned 31 bags holding 6 million meth pills"
https://www.chiangraitimes.com/news/chiang-rai-police-chase/