This image was captured during a flight over Mt Cook and the Franz Josef and Tasman glaciers. The shades of blue are caused by particles of glacial rock held in suspension in the meltwater as it flows out from beneath the glacier into the rivers and lake. It reminded me of arteries flowing into a great heart; hence the title.
Over Lake Tekapo, New Zealand
Canon 1D MkIIn, 24–70mm, 1/250 f11, ISO 200by Denis P Glennon AO, Western Australia