Latvian Geologist Dainis Ozols said he believed someone had dug a hole and tried to make it look like a meteoritecrater by burning a pyrotechnic compound at the bottom.
One great meteoritecrater was found in Cangshan region, Shandong Province, and main impact evidences are obtained from macroscopical geologic features, local region characters and so on.
山东苍山地区发现一大型陨石坑，通过大量的勘察工作，目前已找到一些重要的证据。
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An iridium-enriched sediment layer and a large impact crater in the Yucatn provide evidence that a large meteorite struck Earth about 65 million years ago.