▁is ▁a ▁thick , ▁per enn ial ▁ice - and - s now ▁d ome ▁whose ▁thick ness ▁var ies . ▁No ▁exact ▁and ▁permanent ▁sum mit ▁elev ation ▁can ▁therefore ▁be ▁determined , ▁though ▁accurate ▁measurements ▁have ▁been ▁made ▁on ▁specific ▁dates . ▁For ▁a ▁long ▁time , ▁its ▁official ▁elev ation ▁was ▁. ▁In ▁ 2 0 0 2 , ▁the ▁I GN ▁and ▁expert ▁survey ors , ▁with ▁the ▁aid ▁of ▁G PS ▁technology , ▁measured ▁it ▁to ▁be ▁. ▁ ▁After ▁the ▁ 2 0 0 3 ▁heat wave ▁in ▁Europe , ▁a ▁team ▁of ▁scient ists ▁re - me as ured ▁the ▁height ▁on ▁ 6 ▁and ▁ 7 ▁September . ▁The ▁team ▁was ▁made ▁up ▁of ▁the ▁gla ci ologist ▁Luc ▁More au , ▁two ▁survey ors ▁from ▁the ▁G PS ▁Company , ▁three ▁people ▁from ▁the ▁I GN , ▁seven ▁expert ▁survey ors , ▁four ▁mountain ▁gu ides ▁from ▁Cham on ix ▁and ▁Saint - G erva is ▁and ▁four ▁students ▁from ▁various ▁instit utes ▁in ▁France . ▁This ▁team ▁noted ▁that ▁the ▁elev ation ▁was ▁, ▁and ▁the ▁peak ▁was ▁ ▁away ▁from ▁where ▁it ▁had ▁been ▁in ▁ 2 0 0 2 . ▁ ▁After ▁these ▁results ▁were ▁published , ▁more ▁than ▁ 5 0 0 ▁points ▁were ▁measured ▁to ▁assess ▁the ▁effects ▁of ▁climate ▁change ▁and ▁the ▁fl uct u ations ▁in ▁the ▁height ▁of ▁the ▁mountain ▁at ▁different ▁points . ▁Since ▁then , ▁the ▁elev ation ▁of ▁the ▁mountain ▁has ▁been ▁measured