Nuragic Culture 1800 - 250 BC

(February 24, 2024) This culture is the earliest phase of the Nuragic culture on Sardinia and it is found over the whole island. The earliest Nuraghe were built at this time. They consisted of tall stone towers with an internal stairway to a top platform. So they were only good for signaling the neighbors and a few days defense with bows. They are found along the coast and along the rivers which were the main raiding paths then just as they were during the Viking era.

Consequently, these are called proto-nuraghe.

 This culture divided into 2 sub-phases:

1. A1 Corona Moltana - 1800–1650 BC

2. A2 Sant'Iroxi 1650–1600 BC 

The Bonnanaro grave typologies include the domus de janas, caves, cists, and barrows (gallery grave, long dolmen) so they were a continuation of the previous culture. So only the material culture changed and not the religious culture.

Reference

https://en.wikipedia.org/wiki/Bonnanaro_culture

Various sources claim about 7000 Nuraghes exist in Sardinia.