Some cool flash photo images:
Image by mikebaird
Sunset (green flash en.wikipedia.org/wiki/Green_flash exhibited?), Morro Bay, CA, 11-15-06, Photo by Mike Baird, bairdphotos.com
Image by Mike.D.Green
This was a very, very dull day, with low-lying fog just 30 metres or so above the fall, but the long exposure brought out the colours in the rocks and peaty water very nicely.
Thonrton Force is the most prominent (largest!) fall on the famous Ingleton Waterfalls Walk, which is a 4 mile walk starting and finishing in Ingleton, in the Yorkshire Dales National Park, UK, and taking in a series of waterfalls in two gorges, as well as some open fellside at the base of Twisleton Scar.
View large - I left this on the dark side to emphasise the sinuous line of the water.