Once past the "Rifugio Marini" you come to Piano Battaglia Polje. Together with the Battaglietta depression, this forms the largest karst depression in the Madonie Mountains, reaching 2500 m in length and 800 m in width. The Polje is bounded by the carbonatic steep slopes of Monte Mufara, in the south, and Pizzo Carbonara, in the north; residual hills of limestone (hum) protrude through the clayey floor. Small-scale solutional sculptures (Karren), like solution pans (Kamenitza), cavernous Karren and rounded solution runnels (Rundkarren), develop on carbonatic blocks and slopes.