Explore details about location 国道２１２号. 国道２１２号 is a location situated within the 日田市 alongside other areas such as 国道２１２号, 国道２１０号, 戸畑日田線. Additionally, some smaller parts of 国道２１２号 include specific areas like 国道３８６号, 日田鹿本線, 国道212号筑後街道 adding to the diversity of its landscape.