Calar del Mundo Nature · Riópar, Sierra del Segura, Albacete Image of Riópar, not of the place itself. A limestone plateau some fifteen kilometres long by four wide that acts like a sponge: it filters the rain and snow and channels them through underground galleries to the Cueva de los Chorros. Photo: Mentxuwiki (CC BY-SA 4.0) What to see and do in Riópar