Ashfall (Days of Destruction, Book 4)

Unrelenting quakes continue to chase Lilly and Matti, while the eruption of Yellowstone covered the sky in ash, threatening all who have survived in Days of Destruction Book 4.
Tired of the same old apocalyptic storylines? Welcome to your new addiction.
The best-selling post-apocalyptic authors Mike Kraus and Stephanie Mylchreest bring a new gripping tale of destruction, survival and humanity like no one else can.
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Book 4 of 6 as of 7-17-2023When Russia decides to test an underground nuclear weapon far deeper than ever before, the world watches with bated breath for it to fizzle out.
Instead, the massive underground explosion triggers a cascade of earthquakes that sweep across the world, killing hundreds of millions as the Eurasian Plate is split in twain.
A consultant on the project, Johannes, flown over from his home in Texas, barely manages to get to safety and is faced with a sickening realization: he has helped to destroy the world.
As he sets off on a journey to save his wife and the rest of his family, other survivors of the disaster band together, finding that what unites them in the face of destruction is far more powerful than what sets them apart.