▁letter ▁for ▁the ▁Al oten ango ▁mayor ▁asking ▁for ▁his ▁assistance ▁with ▁gu ides ▁to ▁help ▁the ▁expl orer ▁and ▁his ▁companion , ▁T ade o ▁Tra ban ino . ▁ ▁They ▁wanted ▁to ▁clim b ▁the ▁central ▁peak , ▁un expl ored ▁at ▁the ▁time , ▁but ▁could ▁not ▁find ▁a ▁guide ▁and ▁had ▁to ▁clim b ▁to ▁the ▁active ▁cone , ▁which ▁had ▁a ▁recent ▁er u ption ▁in ▁ 1 8 8 0 . ▁ ▁British ▁ar che ologist ▁Alfred ▁Per c ival ▁Ma ud sl ay ▁clim bed ▁the ▁vol cano ▁on ▁ 7 ▁January ▁ 1 8 9 2 . ▁ ▁Here ▁is ▁how ▁he ▁described ▁his ▁expedition : ▁ ▁Notable ▁er u ptions ▁▁ 1 7 1 7 ▁destruction ▁of ▁Santiago ▁de ▁los ▁Cab all eros ▁ ▁The ▁strong est ▁earth qu akes ▁experienced ▁by ▁the ▁city ▁of ▁Santiago ▁de ▁los ▁Cab all eros ▁before ▁its ▁final ▁move ▁in ▁ 1 7 7 6 ▁were ▁the ▁San ▁Miguel ▁earth qu akes ▁in ▁ 1 7 1 7 . ▁In ▁the ▁city , ▁people ▁also ▁believed ▁that ▁the ▁proxim ity ▁of ▁the ▁Vol c án ▁de ▁Fu ego ▁( English : ▁Vol cano ▁of ▁Fire ) ▁was ▁the ▁cause ▁of ▁earth qu akes ; ▁the ▁great ▁architect ▁Diego ▁de ▁Por res ▁even ▁said ▁that ▁all ▁the ▁earth qu akes ▁were ▁caused ▁by ▁vol cano ▁explos ions . ▁ ▁On ▁ 2 7 ▁August ▁there ▁was ▁a ▁strong ▁er u ption ▁of ▁Vol c án ▁de ▁Fu ego ,