I have been visiting the Iskra area for many years [it is a good winter area] and thinking it needs sorting out. The old Northern Gramps guide got the cliffs incorrectly placed on the map on page 104, which has obviously caused you some confusion, as it has pretty much every visitor for years.
What your photo shows as Shadow Buttress is where it is marked [incorrectly] in the guide. That cliff is in fact Pigs in Space Buttress. The cliff marked as Pigs in Space Buttress in the guide was at that time an unclimbed block [but has a couple of routes on it now]. The real Shadow Buttress is not marked at all in the old guide book, but should be shown as being in front of Number 4, Sunstroke area. The initials for This is not Funny are still clearly visible.
The real Pigs in Space is on your Shadow Buttress and looking at your photo takes the obvious easy angled corner to the overlap about 2/5 of the way along from the left edge of your blue box.
Like I said the area needs sorting out. It is a good start to get the routes descriptions on thecrag, but it is important to get the actual cliffs and climbs correctly identified and labelled.