Avalanche!
an excerpt

Tuv could see the faint blue glow there and ran over to stick his nose to it. The soot stuck to his sweaty skin and dashed his beard with grime. It meant time. Enough time to dig, and not so much distance to go. He could – he thought – he could hear the faint cries of children who had six point six minutes before been playing carefree at the circus. A single shake of the earth’s shoulders and a piddling number of people were dead. Tuv, fourteen, fell asleep that night with a twitch in his right shoulder, twitching up to his ear, a casual shrug, disbelief or query, both of the minor kind.