Egerszalók's real attraction, on the southern side of the village, is the thermal spring erupting from deep in the earth and limestone hill created by water runoff, which over the years has come to be known as "salt hill." The 65-68 C◦ medicinal water rich in mineral content continually builds jagged, white formations, offering an imposing spectacle.
The medicinal water of calcium magnesium hydrogen carbonate also contains sodium and a significant amount of metasilicic acid, and has been ranked as one of the best in the sulphuric medicinal waters category. Over the years, the limestone hill has become a symbol and trademark of the surrounding area. It's a sight unique to Europe, with similar natural formations found only in two other places in the world, at Pamukkale in the Asian part of Turkey and in Yellowstone National Park in the United States.
The first well was drilled in 1961 in search of oil and natural gas, with the drilling of a second well taking place in 1987. We celebrated our 50-year anniversary with the Medicinal Waters Festival in August 2011. While consecrating the wells in the autumn of 2010, they received the names of Mary and Wendelin. The icon of Mary the Miracle Worker can be found in the Egerszalók Catholic Church, while Saint Wendelin is the patron saint of springs and wells.