It is evident that these early communities continued to have contact outside of the island. This can be assumed from the different raw materials that were found by archaeologists and that are known not to belong to these islands.

These include obsidian, a very restricted and rare resource which was used often for blades. The obsidian found in the Maltese Islands originated from Lipari and Pantelleria.

Flint was also probably imported from Sicily. Red ochre used for decoration also came from Sicily. Some of the pottery found further confirms that there was movement going on across the sea between Malta and Sicily. One cannot define these as a definite demonstration of trade, but what is certain is that there was some kind of exchange going on through the sea with the outside world.