Drove from Thong Pha Phum to Kanchanaburi. Visited Hellfire Pass Memorial Museum. The museum and walk commemorate the deaths and suffering of Allied prisoners of war while building the Siam-Burma Railway (aka Death Railway) for the Japanese military.
Also visited Muang Sing Historical Park, home to Khmer ruins from the 13th and 14th centuries. An earlier burial site is from the Bronze Age.