▁in ▁the ▁world . ▁Ram as etu ▁and ▁neighbour ing ▁areas ▁like ▁R ames war am , ▁D han ush k odi , ▁Dev ip att in am ▁and ▁Th ir up ull ani ▁are ▁mentioned ▁in ▁the ▁context ▁of ▁various ▁leg ends ▁in ▁Ram ay ana . ▁ ▁Ge ological ▁evolution ▁ ▁Consider able ▁divers ity ▁of ▁opinion ▁and ▁confusion ▁exists ▁about ▁the ▁nature ▁and ▁origin ▁of ▁this ▁structure . ▁In ▁the ▁ 1 9 th ▁century , ▁two ▁major ▁theories ▁were ▁prominent ▁in ▁explaining ▁the ▁structure . ▁One ▁considered ▁it ▁to ▁be ▁formed ▁by ▁the ▁process ▁of ▁acc ret ion ▁and ▁rising ▁of ▁the ▁land , ▁while ▁the ▁other ▁sur m ised ▁that ▁it ▁was ▁established ▁by ▁the ▁breaking ▁away ▁of ▁Sri ▁L anka ▁from ▁the ▁Indian ▁main land . ▁The ▁fri able ▁cal care ous ▁rid ges ▁later ▁broke ▁into ▁large ▁rect angular ▁blocks , ▁which ▁perhaps ▁gave ▁rise ▁to ▁the ▁belief ▁that ▁the ▁cause way ▁is ▁an ▁artificial ▁construction . ▁ ▁According ▁to ▁V . ▁Ram ▁Moh an ▁of ▁the ▁Centre ▁of ▁Natural ▁Haz ards ▁and ▁Dis aster ▁Studies ▁of ▁the ▁University ▁of ▁Mad ras , ▁" re const ruction ▁of ▁the ▁ge ological ▁evolution ▁of ▁the ▁island ▁chain ▁is ▁a ▁challeng ing ▁task ▁and ▁has ▁to ▁be ▁carried ▁out ▁based ▁on ▁circumst ant ial ▁evidence ". ▁The ▁lack ▁of ▁compreh ensive ▁field ▁studies ▁explains ▁many ▁of ▁the ▁un cert aint ies ▁regarding ▁the ▁nature ▁and ▁origin ▁of ▁Adam ' s ▁Bridge , ▁which ▁mostly ▁consists ▁of ▁a ▁series