This is one tree, but like many of them it's split at the base and comes together in the middle. Much like two dancers whose feet cannot touch but whose bodies never seperate. It's rare to see an olive tree grow completely vertically, and like this "couple" many appear to be midway through a sweeping dip in a ballroom dance series.
This younger guy is giving the old folks a run for their money. The twists of his trunk at such a young age (he's probably under 100) shows that he is on his way to trunk greatness. But watch out, because if you are a child playing hide and seek in the dark olive groves, his youthfulness might get the best of him and he'll untwist, rise up to his full greatness, pull his giant roots from the ground and try to play along. Spooooky.
And then there are some that are just plain welcoming. Like their human counterparts here in the south, they are always ready with their arms wide open, waiting for you to crawl in, pose, and smile.