Green Lane was a nightmare - it was an ice sheet most of the way - and a hand rail would have been darn handy. I went down via Megger Stones because the snow was so deep to go my normal way (the fellsman and Whernside fell race route which drops down to Blea Gill Rigg (?)) and there was a semi trodden path going that way. And the picture of Ingleborough was taken from Great Coum - the Whernside ridge in between doesn't get in the way at that angle. As for the 'longest wall to follow in the world' between the Whernside trig and Ewes Top; well its pretty endless going up or down