Talk:Assembler/@comment-4635610-20111220033724/@comment-4583259-20111220041154

These are both pretty common features, and are pictured in the Geology article. In the first picture note the "gravel-fileld void". The sharp cutoffs or "cliffs" are shown in that article, and there are more dramatic examples in the blog article User_blog:Scooter8pie/New_Terrain_Generation_Bug. If the cliff is near your base, monogram it!