rockyboy, the bare ledge is actually only one, which you can see on the first picture; in between there's a really annoying scree. Snow starts on the lower or initial part of the ascent to Stenar Gates; if you prefer walking on snow rather than on scree, choose the ascent on the right side. If you choose this variant, the entire ascent can be done on snow. If you want to avoid the snow patch, it's like this: up to half the ascent no problem, second half or the access to the wall under the gates themselves can't be bypassed; the snow patch is quite long though. Unfortunately, I don't have any clearer picture.