The nominated property extends over a territory consisting of 7 component sites. It surrounds the entire straight ridge of evaporite outcrops that emerges on the northern slopes of the Apennines, from the “Vena del Gesso Romagnola” to the Secchia River Valley , which exposes, by erosion, some older evaporite deposits. The boundaries of the nominated property extend also underground, to include the cavities produced by karst phenomena.

All the major known caves in evaporites are included in the nominated property and are protected by Regional, National and International laws.

The boundaries take into account the extension of the whole karstic system, including the hydrogeological circulation and alimentation basin. A particular attention has been posed to include all the historical study areas, due to the relevance that these places had in the development of evaporite speleology, mineralogy and hydrogeology disciplines.

The areas and the coordinates of the centroid of each component site are as follows

ID 119 ha

ID Name of the component part

Latitude

of the central

point

Longitude

of the central

point

Area

of nominated

component

part (ha)

Area of the

Buffer Zone

(ha)

c.s. 1

Alta Valle Secchia

44° 21' 41" N

10° 23' 10" E

1596 ha

1294 ha

c.s. 2

Bassa Collina Reggiana

44° 35' 06" N

10° 35' 56" E

274 ha

1385 ha

c.s. 3

Gessi di Zola Predosa

44° 27' 40" N

11° 13' 13" E

57 ha

128 ha

c.s. 4

Gessi Bolognesi

44° 26' 15" N

11° 24' 00" E

237 ha

325 ha

c.s. 5

Vena del Gesso Romagnola

44° 15' 07" N

11° 38' 38" E

1313 ha

4775 ha

c.s. 6

Evaporiti di San Leo

43° 55' 05" N

12° 20' 45" E

119 ha

165 ha

c.s. 7

Gessi di Onferno

43° 52' 30" N

12° 32' 51" E

84 ha

276 ha

    

3 680 ha

8 348 ha