10 Mysterious Ancient Maps 10Home Sweet Home Archaeologists at Spain’s Moli del Salt site discovered what may be a 13,800-year-old map. The schist slab features seven semi-circular etchings, which experts believed to be huts. The shape coincides with modern hunter-gatherer dwellings of the Kalahari Bushmen and Aboriginals of the Australian Outback. The number seven reflects a typical population size. If true, this would be the earliest image of a human habitation ever discovered. Anthropologists are thrilled by the idea that these huts are a spatial representation of social structure. All of the lines were carved with the same tool at the same time—suggesting one individual captured what was in front of him at one moment.