Tellef Dahl, a Norwegian geologist, had arrived in the Tenojoki River in 1865 and found gold. Based on this, the Senate of the Grand Duchy of Finland sent an expedition in 1868 to investigate the northern river areas to see if more gold could be found.
The expedition was led by Johan Conrad Lihr, Deputy Director of Mint of Finland, Mountain Engineer. In September of the same year, the expedition arrived on the Ivalojoki River. The bedrock rising above the mouth of Louhioja made the expedition stop. In a short space of time, the men found good amount of gold.
In honor of Lihr, the Gold Museum erected a memorial three hundred meters upstream of the mouth of Louhioja.