The Račna Karst Field is a karst field in the northern edge of the Lower Carniolan karst area, south of Grosuplje, Slovenia. It has rich natural and cultural value. Because of its ecological significance, it is anticipated that a nature park will be established there and that it will be included in the Natura 2000 program.

Velika Račna is a village in the Municipality of Grosuplje in central Slovenia. The area is part of the historical region of Lower Carniola. The municipality is now included in the Central Slovenia Statistical Region. Kopanj Hill rises 70 m above the village to the north; geologically, the hill is a mix of karst limestone and dolomite. The hamlet of Kopanj is located on Kopanj Hill.