The Nagórzyckie Caves in Tomaszów Mazowiecki are 18th-century excavations of an underground quartz mine. They are located in the former village of Nagórzyce, now a district of the city. The sandstone rocks from which they are built date back to the Cretaceous period. Sand extraction continued until the beginning of the 20th century, when mining was banned after the tragic collapse of one of the chambers. After years of oblivion, the caves were restored thanks to the support of the European Union and opened to tourists in 2012. This place is associated with the legend of the robber Madej.