Published caption : Prior to the advent of sealed roads, the merchants of Khun Yuam used to have rafts made to transport their goods southwards along the Yuam River to Mae Sariang, hence the name given to a local temple, Wat To Phae _ ''the temple where rafts are built''. This compound was used as a temporary military headquarters by the Japanese during their retreat from Burma in 1945. The Japanese also produced Thai banknotes here which were used to pay Thai labourers for their services. (The outbreak of World War II caused an interruption in the supply of Thai banknotes which up to then had been printed in England by Thomas De La Rue & Co Ltd. The Thai government requested the Japanese military authorities to make up the shortfall by printing banknotes for use here.)