Clouds in the sunny sky in rocky canyon. There is a high rocky wall in valley. Time lapse stable camera. In meteorology, a cloud is an aerosol consisting of a visible mass of minute liquid droplets, in the atmosphere. As air rises and cools, it saturated and cannot hold its quantity of vapor. Partly cloudy overcast over weather deep multi-level fibratus fluffy fading mix mixed mixture Forest woods wood tree woodland boreal temperate forests green dense vegetation land cover beech forestry hurst bark trunk sylvan grove plant plants subtropical ecoregion air thermal dry nature natural slider dolly close up UHD 4K 3840X2160.