A photo of the Badger nuclear test from operation Upshot-Knothole. Edited by me.

Fallout 4 mushroom explosions

A very detailed breakdown by Simon Schreibt on how the mushroom explosions in Fallout 4 were made.

Read the article on Simon's website, here:
https://simonschreibt.de/gat/fallout-4-the-mushroom-case

There's a bunch of other really cool articles worth checking out on Simon's website as well.