Comment: Could it be

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Could it be

There was a more advanced civilization that was erased by a cataclysm possibly 10,000 years ago or more? The vast amount of the technology we now have was, for he most part, advanced in just a few hundred years. A 1000-2000 years is just a blip on the time frame of human history and is more than enough time to develop a fairly advanced civilization. We also know the water level of the oceans now is hundreds of feet higher than it once was. If this is true any archaeological evidence would be deep under the oceans, since most human civilizations tend to locate at or near the sea shore. This would be a more logical theory than time travelers or aliens.