▁the ▁rock ▁form ations ▁in ▁the ▁park , ▁Ele ph ant ▁But te ▁is ▁composed ▁of ▁En tr ada ▁Sand stone . ▁Ele ph ant ▁But te ▁is ▁a ▁flat - to pped ▁cap ▁surrounded ▁by ▁numerous ▁to wers ▁and ▁fins ▁including ▁Par ade ▁of ▁Ele ph ants . ▁Double ▁Arch ▁is ▁also ▁a ▁natural ▁feature ▁of ▁Ele ph ant ▁But te ▁and ▁was ▁used ▁as ▁a ▁back drop ▁for ▁the ▁opening ▁scene ▁of ▁Indiana ▁Jones ▁and ▁the ▁Last ▁Cr us ade . ▁P reci p itation ▁run off ▁from ▁Ele ph ant ▁But te ▁dra ins ▁east ▁into ▁the ▁nearby ▁Colorado ▁River . ▁ ▁Ge ology ▁Ele ph ant ▁But te ▁lies ▁above ▁an ▁under ground ▁salt ▁bed , ▁causing ▁the ▁formation ▁of ▁the ▁arch es , ▁sp ires , ▁bal anced ▁rocks , ▁sand stone ▁fins , ▁and ▁er oded ▁mon ol ith s ▁in ▁the ▁area . ▁The ▁rock ▁is ▁En tr ada ▁Sand stone . ▁ ▁Cl imate ▁Spring ▁and ▁fall ▁are ▁the ▁most ▁favor able ▁seasons ▁to ▁experience ▁Arch es ▁National ▁Park , ▁when ▁high s ▁average ▁ 6 0 ▁to ▁ 8 0 ▁° F ▁and ▁l ows ▁average ▁ 3 0 ▁to ▁ 5 0 ▁° F . ▁Summer ▁temper atures ▁often ▁exceed ▁ 1 0 0 ▁° F . ▁Winter s ▁are ▁cold , ▁with ▁high s ▁aver aging ▁ 3 0 ▁to ▁ 5 0 ▁° F , ▁and ▁l ows ▁aver aging ▁ 0 ▁to ▁ 2 0 ▁° F . ▁As ▁part