The Tunguska Explosion of 1908 still remains a mystery until today. Basically, a massive explosion took place above the remote Russian forests of Tunguska, Siberia back in the said year that flattened a staggering 800 square miles of land.

Scientists would normally credit this to a meteor but the thing is, no fragments of such or even craters have been discovered yet. However, one study that began almost 10 years ago now infers that the missing crater can be found underneath Lake Cheko.

The said lake is 164-foot deep and is located five miles northwest of the epicenter of the explosion. University of Bologna (in Italy) physicist and co-author of the study Giuseppe Longo explained,

When we looked at the bottom of the lake, we measured seismic waves reflecting off of something. Nobody has found this before. We can only explain that and the shape of the lake as a low-velocity impact crater. Expeditions in the 1960s concluded the lake was not an impact crater, but their technologies were limited.