Hidden Gas Pockets — These are by far the most dangerous of disasters that can occur on mars. They are completely undetectable and extremely deadly without one of the top two hulls. Excercise extreme caution when you know they are in the area… Note: They usually only occur after about -5,000 feet, but have been known to occur in as early as -4,700 feet. My tip: Be careful after -4,500 just to be safe.
Требуется скилл крафтинга.
Отсюда
en.wikipedia.org/wiki/Infrasound#Animal_reactions_to_infrasound
Не на говноблоги какие-то ссылку же давать. На них вообще надо ссылки забанить, если они единственные на весь пост.