SPW062639 SCOTLAND (1939). Loch Lomond, general view, showing Inchfad and Inchlonaig. An oblique aerial photograph taken facing north.

Here we can see three of the main elements in the weather systems that shape our planet - water, mountains and clouds. Clouds are moisture-bearing weather formations that form when moisture-laden air rises and condenses in the atmosphere. Mountains encourage air to flow upwards and condense, eventually causing the water content in the cloud to be discharged in the form of rain (or hail or snow, if the air temperature is cold enough). Rain flows off the land into stream and rivers, and is eventually collected in the sea, or in large lakes or lochs, as we see here.

The loch islands of Inchmurrin, Creinch, Torrinch, and Inchcailloch all form part of the Highland Boundary Fault.