the majestic alp summit bietschhorn 3934 m. on the south flank of the loetschtal valley

3934 alp alpine alps angle bietschhorn bietschorn blue clear cliff climbing cold covered europe flank glacier heritage ice its landscape lang lapara lauchernalp leading left loetschental loetschtal long majestic mountain nature panorama peak peaks range ridge rock rocks ski sky snow south summit sun swiss switzerland top tschental unesco valley valleys wallis white wide winter