Why were 19th-century buildings buried under feet of earth — and where did all those orphans come from? Strange 19th-century architecture heights, photos showing buried buildings, and mysterious 'orphan trains' have fueled the viral mystery of a forgotten civilization — dubbed Tartaria — wiped away by a cataclysmic mud flood. Photos from the 1800s show buildings partially buried beneath the ground, even newly constructed ones. Between 1854 and 1929, over 200,000 children were relocated across th