Bo Lek Nam Phi
Bo Lek Nam Phi is a historic iron ore pit located in Nam Phi Subdistrict, Thong Saen Khan District, Uttaradit Province, Thailand. It is renowned as the source of high-quality Nam Phi steel traditionally used to forge swords for Thai kings and warriors since the Ayutthaya period. The site preserves ancient mining pits, exhibitions and a museum displaying traditional smelting and blacksmithing heritage.