▁dra ins ▁into ▁cre eks ▁which ▁empty ▁into ▁Lake ▁Mc Donald . ▁Based ▁on ▁the ▁Kö ppen ▁climate ▁classification , ▁Little ▁M atter horn ▁has ▁an ▁al pine ▁climate ▁character ized ▁by ▁long , ▁usually ▁very ▁cold ▁winter s , ▁and ▁short , ▁cool ▁to ▁m ild ▁sum mers . ▁Tem per atures ▁can ▁drop ▁below ▁− 1 0   ° F ▁with ▁wind ▁ch ill ▁factors ▁below ▁− 3 0   ° F . ▁ ▁Ge ology ▁ ▁Like ▁other ▁mountains ▁in ▁Gla cier ▁National ▁Park , ▁Little ▁M atter horn ▁is ▁composed ▁of ▁sed iment ary ▁rock ▁laid ▁down ▁during ▁the ▁P rec amb rian ▁to ▁Jur ass ic ▁periods . ▁Form ed ▁in ▁shall ow ▁se as , ▁this ▁sed iment ary ▁rock ▁was ▁initially ▁u pl ift ed ▁beginning ▁ 1 7 0   mill ion ▁years ▁ago ▁when ▁the ▁Lewis ▁Over th rust ▁fault ▁pushed ▁an ▁enorm ous ▁sl ab ▁of ▁prec amb rian ▁rocks ▁ ▁thick , ▁ ▁wide ▁and ▁ ▁long ▁over ▁younger ▁rock ▁of ▁the ▁cre t ace ous ▁period . ▁ ▁References ▁ ▁See ▁also ▁ ▁Ge ology ▁of ▁the ▁Rock y ▁Mountains ▁ ▁List ▁of ▁mountains ▁and ▁mountain ▁ranges ▁of ▁Gla cier ▁National ▁Park ▁( U . S .) ▁ ▁Gallery ▁ ▁External ▁links ▁▁ ▁Lake ▁Mc Donald ▁web ▁cam ▁with ▁Little ▁M atter horn ▁on ▁the ▁right : ▁National ▁Park ▁Service ▁ ▁Little ▁M atter horn : ▁We ather ▁ ▁Cl im bing ▁Little ▁M atter horn : ▁YouTube ▁ ▁Category :