carbon-oxygen lyase activity, acting on phosphates (-)-endo-fenchol synthase activity https://github.com/geneontology/go-ontology/issues/30193 geranyl pyrophosphate:(-)-endo-fenchol cyclase activity (-)-endo-fenchol cyclase activity Catalysis of the reaction: geranyl diphosphate + H2O = (-)-endo-fenchol + diphosphate. molecular_function EC:4.2.3.10 MetaCyc:4.2.3.10-RXN KEGG_REACTION:R02004 geranyl-diphosphate diphosphate-lyase [cyclizing, (-)-endo-fenchol-forming] RHEA:20565 GO:0050437