Tunguska event; Why is there no trace of the largest asteroid impact recorded in history?

But some experts were not satisfied with the above theory. In 2017, a group of researchers led by Denis Rogozin from the Institute of Biophysics of the Russian Academy of Sciences conducted their analysis and concluded that the sediments of Lake Chico are at least 280 to 390 years old, and thus significantly older than the Tunguska event of 1908.

In a new study published on May 2 this year in the journal Doklady Earth Sciences, Rogozin and colleagues provided more evidence to refute the claim that Lake Chico is the same as the site of the Tunguska asteroid impact event.

In the past, many researchers believed that the conical and strange shape of Chico Lake is unique in that region and was probably formed due to an asteroid impact; But Rogozin and his colleagues examined two nearby lakes, Zapodnoi and Pinugda, which are located 50 km and 60 km from the asteroid impact site, respectively, and by the way, both are cone-shaped.