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Lake Chiemsee strewnfield

A strewnfield of craters around Lake Chiemsee, in south-east Bavaria, which may have been caused by fragments of a huge comet that broke up in the Earth’s atmosphere.

More than 80 craters were found in an elliptical area 36 miles long and 17 wide, ranging in size from 10 to 1,215 feet across. The largest, filled with water, now formed Lake Tuttensee.

Evidence from ancient tree rings and Roman reports of “stones falling from the sky”, has led researchers to conclude that the impact happened in about 200BC.