People tend to forget that Ilium (known to most as Troy) was regarded as entirely legendary until the late 19th century. There was no evidence for Troy until th

People tend to forget that Ilium (known to most as Troy) was regarded as entirely legendary until the late 19th century. There was no evidence for Troy until there was. Even so, it is fun to think about such things. The more wild, the better. For example, save some areas earth's crust is largely turned over, which means evidence of civilization on certain land masses would have long been melted down by now. The only hope for evidence would, in my view, be artifacts in space, assuming those past civilizations were space-faring. Its just fun to speculate, even if it borders on or exceeds the line between science and science fiction. Antarctica is under thousands of feet of ice. Pulverized evidence of civilization might survive there, just like the petrified remains of 100MM year old trees. Who knows? That's the fun.