▁is ▁the ▁Great ▁Th under ▁and ▁his ▁sons , ▁the ▁two ▁Th under ▁Boys , ▁who ▁live ▁in ▁the ▁land ▁of ▁the ▁west ▁above ▁the ▁sky ▁v ault . ▁ ▁They ▁dress ▁in ▁light ning ▁and ▁rain b ows . ▁The ▁pri ests ▁pray ▁to ▁the ▁th under ▁and ▁he ▁vis its ▁the ▁people ▁to ▁bring ▁rain ▁and ▁bless ings ▁from ▁the ▁South . ▁ ▁It ▁was ▁believed ▁that ▁the ▁th under ▁be ings ▁who ▁lived ▁close ▁to ▁the ▁Earth ' s ▁surface ▁in ▁the ▁cl iffs , ▁mountains , ▁and ▁water falls ▁could ▁harm ▁the ▁people ▁at ▁times , ▁which ▁did ▁happen . ▁These ▁other ▁th und ers ▁are ▁always ▁plot ting ▁m isch ief . ▁ ▁Green ▁Corn ▁Cer em ony ▁ ▁The ▁th under ▁be ings ▁are ▁viewed ▁as ▁the ▁most ▁powerful ▁servants ▁of ▁the ▁App ort ion er ▁( Cre ator ▁Spirit ), ▁and ▁are ▁rever ed ▁in ▁the ▁first ▁dance ▁of ▁the ▁Green ▁Corn ▁Cer em ony ▁held ▁each ▁year , ▁as ▁they ▁are ▁directly ▁believed ▁to ▁have ▁brought ▁the ▁ra ins ▁for ▁a ▁successful ▁corn ▁c rop . ▁ ▁Medicine ▁and ▁D ise ase ▁It ▁is ▁said ▁that ▁all ▁plants , ▁animals , ▁be asts ▁and ▁people ▁once ▁lived ▁in ▁harm ony ▁with ▁no ▁separation ▁between ▁them . ▁At ▁this ▁time , ▁the ▁animals ▁were ▁bigger ▁and ▁stronger ▁until ▁the ▁humans ▁became ▁more ▁powerful . ▁When ▁the ▁human ▁population ▁increased , ▁so ▁did ▁the ▁weapons , ▁and ▁the ▁animals ▁no ▁longer ▁felt ▁safe . ▁The ▁animals ▁decided