While the ancient Roman city of Pompeii was famously preserved by the ash and pumice from the eruption of Mount Vesuvius in 79 AD, the bodies of the people in the nearby towns were not as well preserved. There are several reasons for this:

Type of Eruption: The eruption of Vesuvius was a Plinian eruption, characterized by a tall column of ash and pumice that rose into the atmosphere. The ash and pumice fell over a large area, but the heaviest deposits were closest to the volcano. The town of Pompeii was located about 10 kilometers from Mount Vesuvius, while other towns, such as Herculaneum and Stabiae, were closer. The people in Pompeii were therefore less likely to be buried by the heaviest deposits of ash and pumice.

Distance from the Volcano: The distance from Mount Vesuvius also affected the preservation of the bodies. The closer a town was to the volcano, the greater the heat and the more intense the pyroclastic flows. These flows were hot clouds of ash, gas, and debris that traveled at high speeds and destroyed everything in their path. The people in the towns closest to Mount Vesuvius were more likely to be killed by the pyroclastic flows, and their bodies were more likely to be incinerated or disintegrated.

Burial Conditions: The nature of the burial conditions also affected the preservation of the bodies. In Pompeii, the bodies were buried under a deep layer of ash and pumice, which helped to protect them from decomposition. In other towns, however, the bodies were not as well protected. In Herculaneum, for example, the town was buried under a layer of mud and ash, which was not as effective at preserving the bodies. Additionally, the bodies in Herculaneum were exposed to higher temperatures, which further accelerated decomposition.

Time Since the Eruption: The amount of time that has passed since the eruption of Vesuvius has also affected the preservation of the bodies. Over time, the bodies have decomposed and been further damaged by natural processes, such as rain, wind, and earthquakes. The bodies that were buried in the deepest layers of ash and pumice have been better preserved, while those that were buried closer to the surface have been more exposed to the elements and have decomposed more rapidly.

In conclusion, the bodies of the people in the towns near Pompeii were not as well preserved as the bodies in Pompeii itself due to a combination of factors, including the type of eruption, the distance from the volcano, the nature of the burial conditions, and the amount of time that has passed since the eruption.