long exposure of fast flowing water cascading down rocks in a mountain river

wave waterfall watercourse water terrain stream rock river rapid nature creek fast mesmerizing scenic water environment wild iceland overcast flow scenery hiking splash boulder mountain flowing zen hike dramatic silky long exposure waterfalls outdoors adventure landmark fall background rock sightseeing hiking destination peaceful majestic cascades tranquil scenic waterfall serene stream green flowing outdoor forest natural travel nature landscape wilderness motion rapid cascade