Take the following as truth: While Pompeii was incinerated by volcanic cinders, a minimum of 20 m (65 ft) of ash and mud swamped Herculaneum, hardening and covering the houses in a protective crust that kept upper stories and even some of the woodwork intact.
Then the following statement: "The mud and ash that flooded Herculaneum destroyed everything and protected nothing." is true, false, or inconclusive?