cumbria England english fell fellside flow Great Britain landscape mountain Natural landscape nature rocks stream view water water resources bridge cold december frost ice park snow tree trees walk winter aeration channel current dam danger outflow race steps Sussex backdrop background orange red ripples river rust sand sediment sunlight texture yellow abstract effects elegant fill float flowing gentle graphic hades hell hot illustration lava magic melt mystical peace reflection refraction shiny sleep summer tide warm wavy bubbles calm cascade drain lichen moss rock tranquil trickle waterfall brown brownish fast Himalayas Incredible India India Jammu Ladakh mountains muddy rafting River Zanskar swift waters Zanskar aerate fall rivulets stone streams wales wall welsh