As usual there is outlandish speculation about an alien visit, but there is genuine puzzlement and disagreement among experts over the mystery object.
Water poised to flow again after huge ‘collapse’ of mountain caused by freak landslide or ‘meteorite strike’.
Military strikes from air not ruled out to move giant landslide blocking Bureya River causing flood threat to villages.
Flooding threat ‘averted’ in remote villages after Russian military operation including 7 major explosions.
No official explanations for darkness over swathes of Yakutia amid conspiracy theories of a UFO, new weapons tests, a meteorite, or pollution from wildfires.
Vapour trail casts ghostly spectre above Altai just minutes after rocket carrying satellite blasts off into space.
Tuim Hole first appeared 62 years ago and has sheer 120 metre cliffs reaching down to its deep turquoise waters.
Startling new details emerge of the most mysterious of Siberia's newly created giant permafrost holes.
Scientists give startling theory for 1908 Tunguska Event in Siberia which had force of 185 Hiroshima bombs.
Mysterious 'gigantic' hole in remote region spotted by helicopters over gas-rich Yamal peninsula.