Katie Hunt of CNN –
The massive crater appeared violently and explosively in the Siberian tundra last year — a powerful blowout of methane gas throwing ice and rock hundreds of feet away and leaving a gaping circular scar in the empty and eerie landscape.
It was the 17th hole to appear in the remote Yamal and Gyda peninsulas in the Russian Arctic since the first was spotted in 2013, mystifying scientists. The craters are thought to be linked to climate change. Drone photography, 3D modeling and artificial intelligence are helping to reveal their secrets.
Radnor Reports: Information for decision-makers 