Maybe SSG should clarify the term Landscape and see if it doesn't include interior spaces. Comes of reusing spaces rather than making new ones perhaps.
Kala-murg spiders that drop nothing else but did drop a cyan surprises me. I've been assuming if nothing was dropping there was no chance of a cyan. Well what should I expect, there little rhyme of reason with much of Mordor given the lack of substantive dev diaries.