blue Glaciers hills Himalayan Range Himalayas horizon Incredible India India Indus melting snow mountain range mountains peaks rivers sky snow caps snow peaks valley valleys altitude austere bleak boulders cloud cold freezing habitat harsh high icy landscape melting natural nature norway norwegian plants plateau resilient rocks rough rugged snow white current drop fall fierce force mountain power raging river roar snow melt steep surge water waterfall wild dwindle edge July margin melt pool retreat road rock thick cover deep far remote ridge snowy summer Thaw isolated route transport