I saw a single one today. I had time to get into the right spot before it faded. http://aveburytour.mysite.wanadoo-members.co.uk/SingleRainbow.jpg PeteG
Daft bugger - the hills are surely intended to be viewed (rather than climbed). Check also www.spaceweather.com for what they call a Brocken Spectre. And wait for the North Pennine rainbow pictures (1) to appear.