Epicentre in Republic of Khakassia, but tremors were felt over a wide area including Krasnoyarsk city.
Plane, three fire trains and 5,000 people fighting as dry grass ignites 'like gunpowder'.
Stunning apocalypse scenes, as night turned to day in southern districts of the Republic of Khakassia.
Premier Dmitry Medvedev launches inquiry into the tragedy which leaves almost 600 injured.
Tuim Hole first appeared 62 years ago and has sheer 120 metre cliffs reaching down to its deep turquoise waters.
Spray as tall as nine storey house.
Tearful plea on president's televised call-in leads to promise to overcome carnage in Khakassia and Chita.
Creature with 'a typical serpentine pose' existed more than 2,000 years ago, say scientists.
President meets with people affected and pledges support, new homes and financial aid to ensure Khakassia can rebuild.