▁m ) ▁is ▁a ▁but tr ess ▁on ▁the ▁southern ▁side ▁of ▁Mont ▁Bl anc ▁in ▁the ▁Mont ▁Bl anc ▁mass if ▁in ▁the ▁A osta ▁Valley , ▁Italy . ▁▁ ▁The ▁first ▁as cent ▁from ▁the ▁valley ▁was ▁by ▁James ▁E cc les ▁with ▁gu ides ▁Michel ▁Pay ot ▁and ▁Al phon se ▁Pay ot ▁on ▁ 3 0 ▁July ▁ 1 8 7 7 ▁during ▁an ▁as cent ▁of ▁the ▁Pe ut ere y ▁r idge , ▁although ▁the ▁sum mit ▁had ▁been ▁visited ▁on ▁ 2 0 ▁August ▁ 1 8 2 2 ▁by ▁F . ▁Cl iss old ▁with ▁gu ides ▁J . ▁M . ▁C out t et , ▁M . ▁Bos son ney , ▁D . ▁C out t et , ▁P . ▁F av ret ▁and ▁J . ▁B . ▁Sim ond ▁on ▁the ▁descent ▁from ▁their ▁first ▁as cent ▁of ▁Mont ▁Bl anc ▁de ▁Cour may eur . ▁▁ ▁The ▁first ▁as cent ▁of ▁the ▁pill ar ▁( the ▁north - east ▁face ) ▁itself ▁was ▁by ▁Walter ▁Bon atti ▁and ▁T oni ▁G ob bi ▁on ▁ 3 ▁August ▁ 1 9 5 7 . ▁Bon atti ▁said ▁after ▁the ▁clim b ▁that ▁" the ▁mixed ▁terrain ▁of ▁the ▁face ▁was ▁without ▁doubt ▁the ▁most ▁som bre , ▁the ▁most ▁sav age ▁and ▁the ▁most ▁dangerous ▁of ▁any ▁that ▁I ▁have ▁ever ▁encountered ▁in ▁the ▁Al ps ." ▁The ▁first ▁winter ▁as cent ▁of ▁the ▁Bon atti - G ob bi ▁route ▁was ▁by