The Amazing Collaboration of the Iberians

As we walk between the olive trees along a dirt path, I wonder how old they are. A cylindrical extraction from the bark to the core is enough to find out the age of tree. But olive trees are a challenge because they tend to be gnarled and twisted. Could they be the variety that was brought over from modern day Palestine 6,000 years ago? by the Phoenicians? For some reason, I had thought it was the Greeks.