The well was drilled in the 1900s on the territory of the I.V. salt plant. Ryazantsev and named after his wife – at local salt mines and factories it was customary to give the names of household members to various structures. This well goes 98 meters deep and is notable for the fact that, unlike other local deposits, its brines contain a lot of potassium chloride. The well was operated from 1910 to 1923, after which it was closed. The unique chemical composition of its salts was the reason for a special geological expedition, which discovered sylvinite deposits in the vicinity of Solikamsk, after which the construction of a potash fertilizer plant began in the city in 1930. Over time, the Lyudmilinskaya well turned into a symbol of the city, and in the 2000s it was improved and included in the “Green Line of Solikamsk”. It is easily accessible along a country road leading from Herzen Street.