Interesting, somebody else was complaining that his/her overmap had to few labs. Could you provide more data on your settings? (mods used, world settings etc). See this: https://www.reddit.com/r/cataclysmdda/comments/8044ez/weekly_questions_thread_february_25_2018/duu99vg/ Also see: https://github.com/CleverRaven/Cataclysm-DDA/issues/23072