Thereisn't a singleCrusadermapinexistencethatwouldlocateJerusaleminPalestine (orindeedgiveusanydetailedinformationaboutthatregion) - unlikemodernhistorians, mediaevalcartographersknewthelocationoftheHolyLandperfectlywell.
Soundsabsurd?
Notifyouhaveread "History: FictionorScience?"
byProfessorAnatolyFomenko: a brilliantmathematicianand a truescientisttothecore: unconfinedbydogmaticthinkinganddeterminedtogettothebarehistoricaltruthatanycost.
However, newmethodsofferedbyempiricalstatisticsanddevelopedbyAnatolyFomenko, theRussianmathematician, andhiscolleagues, provideplentyofevidencetosupportthetheorythattheDarkAgesare a phantom.