gml:verticalCS is an association role to the vertical coordinate system used by this CRS.
<gml:verticalCS xlink:actuate="" xlink:arcrole="" xlink:href="" nilReason="" gml:remoteSchema="" xlink:role="" xlink:show="" xlink:title="" xlink:type="simple"> <gml:VerticalCS aggregationType="" gml:id="">{1,1}</gml:VerticalCS> </gml:verticalCS>
<element name="verticalCS" type="gml:VerticalCSPropertyType"> <annotation> <documentation>gml:verticalCS is an association role to the vertical coordinate system used by this CRS.</documentation> </annotation> </element>