, ▁in ▁ ▁J avan ese ▁sum ber ▁means ▁" water ▁spring ", ▁while ▁aw an ▁means ▁" no on ". ▁It ▁is ▁thought ▁the ▁clear ▁spring ▁in ▁the ▁past ▁is ▁considered ▁as ▁a ▁holy ▁spring , ▁essential ▁for ▁H indu - B ud dh ist ▁rit uals . ▁Thus ▁the ▁shr ine ▁was ▁built ▁as ▁the ▁land marker , ▁the ▁guard ian ▁and ▁the ▁prote ctor ▁of ▁the ▁water ▁spring . ▁ ▁History ▁This ▁site ▁has ▁been ▁identified ▁with ▁Kas ur ang gan an , ▁or ▁' the ▁garden ▁of ▁the ▁heaven ly ▁n ym ph s ', ▁which ▁was ▁mentioned ▁in ▁the ▁Nag ar ak ret ag ama ▁manuscript ▁as ▁having ▁been ▁visited ▁by ▁King ▁Hay am ▁W ur uk ▁of ▁Maj ap ah it ▁during ▁his ▁royal ▁tour ▁across ▁his ▁real m ▁in ▁East ▁Java ▁in ▁ 1 3 5 9 . ▁ ▁The ▁numbers ▁written ▁on ▁the ▁stones ▁of ▁dag oba ▁( small ▁stup a ) ▁indicate ▁the ▁period ▁between ▁the ▁ 1 1 th ▁and ▁ 1 5 th ▁centuries . ▁However , ▁exam ining ▁the ▁architecture ▁and ▁style , ▁this ▁simple ▁form ▁of ▁stup a ▁is ▁thought ▁to ▁origin ate ▁from ▁between ▁late ▁ 1 4 th ▁to ▁early ▁ 1 5 th ▁century . ▁ ▁In ▁modern ▁times , ▁S umber aw an ▁temple ▁was ▁first ▁discovered ▁during ▁the ▁Dutch ▁East ▁Ind ies ▁period ▁in ▁ 1 9 0 4 . ▁In ▁ 1 9 3 5 ▁a ▁visit ▁was ▁made ▁by ▁research ers ▁from ▁the