brain cloud - Robuta Search

https://www.discovermagazine.com/ash-cloud-from-mt-vesuvius-turned-one-victims-brain-to-glass-47180

Learn how one victim of the A.D. 79 Mt. Vesuvius eruption experienced a singular set of tragic circumstances.

https://www.cbsnews.com/chicago/news/baffoe-bud-seligs-brain-cloud/