Hive Secundus is a crumbling wasteland, infested with twisted Malstrain Genestealer broods. There are very few reasons to go there, but data crystal stacks are a compelling trophy for those with the will to secure them. Ancient structures remain each housing a number of these stacks in armoured alcoves, which allowed many of them to survive the destruction. They may look like junk, but they're a veritable gold mine for the savvy.