{"thcode":3,"term":{"code":732,"name":"natural rock formations","parent":816,"scope":"Naturally formed topographic features, commonly differing conspicuously from adjacent objects or material. [Adapted from Glossary of Geology, 4th ed.]"},"uf":[{"name":"crags","usewith":false},{"name":"pillars (natural formation)","usewith":false},{"name":"pinnacles  (natural formation)","usewith":false},{"name":"rock towers","usewith":false},{"name":"rocks","usewith":false}],"bt":[{"code":816,"name":"physiographic features","parent":1,"scope":null},{"code":1,"name":"Categories","parent":null,"scope":null}],"nt":[{"code":53,"name":"arches (natural formation)","parent":732,"scope":"Natural arch-like openings in a rock mass. [USGS GNIS Feature Class Definitions <http:\/\/geonames.usgs.gov\/domestic\/feature_class.htm>]"}],"rt":[]}