Gessi Bolognesi and Calanchi dell'Abbadessa Regional Park

The Gessi Bolognesi and Calanchi dell'Abbadessa Regional Park is a protected area of gypsum karst, sinkholes, caves and clay badlands just east of Bologna, in the Emilia-Romagna region of Italy. The visitor base is Casa Fantini at Via Jussi 171 in Farneto, San Lazzaro di Savena. The Evaporite Karst and Caves of Northern Apennines, which includes this area, is on the UNESCO World Heritage List. The park is about 20-25 minutes from the centre of Bologna by TPER bus toward San Lazzaro or Farneto (the Roger app and tper.it give current lines), or by car. No permit is required for the marked footpaths, but the caves can be visited only on guided tours booked with the park authority (telephone +39 051 6254821, email eventi@enteparchi.bo.it). The footpaths measure about 3-8 km depending on the loop chosen, and take 2-4 hours. Elevation gain is modest, with short climbs of 100-200 m between gypsum ridges and clay gullies. The surface alternates between firm woodland paths, rocky gypsum outcrops and clay gullies, and the clay becomes very slick after heavy rain, so the badlands are best avoided in wet weather. Shade varies: the wooded gypsum ridges are cool, while the exposed clay slopes catch the sun. There is no serious exposure, though gully edges deserve care. Landmarks along the way include sinkholes, dolines and the karst outcrops that define the park, and the open badland slopes of the Abbadessa. Turn-around points are easy to choose because loops can be shortened at path junctions. Cave temperature stays constant and cool, so an extra layer is needed for guided visits, and a headtorch is needed only if the cave guides provide or require one. Water and snacks should be brought, and a printed park map or the Ente Parchi Emilia Orientale website helps with route choice. The park suits beginners with decent footwear and families with older children, and makes a good half-day trip close to the city.