Siberia's enormous hole in the ground is getting bigger
BBC Reel [www.bbc.co.uk]
[flipboard.com]

A large crater in Siberia's permafrost is getting bigger
and providing intriguing insights into the past.

There's a 'Doorway to The Underworld' in Siberia So Big
It's Uncovered Ancient Forests, Science Alert, Feb. 2018
[www.sciencealert.com]

Yours,

Paul H.

"The past is never dead. It's not even past."
William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)