Why did the Shona built massive walls in Great Enclosure Zimbabwe?

There are several theories about why the Shona people built massive walls in Great Enclosure Zimbabwe, including:

Defensive purposes: The walls may have been built for protection against attacks from rival groups or invaders. The thick stone walls would have provided a strong defense against enemies, making it difficult for them to penetrate the settlement.

Religious significance: The walls could have held religious or ceremonial importance. They may have been used for rituals, religious ceremonies, or as sacred spaces for the Shona people.

Display of power and prestige: The construction of massive walls may have been a way for the Shona rulers to showcase their power and wealth. The impressive size and scale of the walls could have served as a symbol of the kingdom's strength and prosperity.

Resource control: The walls may have been used to control access to valuable resources, such as water, land, or trade routes. By surrounding important resources with walls, the Shona rulers could ensure that they had control over these resources and could regulate their distribution.

Astronomical alignment: Some researchers believe that the walls may have been aligned with astronomical events, such as the rising or setting of the sun on certain dates. This could suggest that the walls had a ceremonial or religious function related to astronomical observations.

Storage and preservation: The walls could have been used to store food, valuables, or other important items. The thick walls would have provided protection from the elements and helped preserve stored items.

It's important to note that these are just theories, and the exact reasons for building the massive walls in Great Enclosure Zimbabwe are not fully understood.