This is effectively a two part site of different eras. At the end of the promontory is a large Cyclopean wall and occupation dated to to the Bronze Age. This part of the site also has more modern military lookout posts.
The other part is an Iron Age Necropolis cave complex, these can be seen best from the end of the promontory, looking back west towards the land. There are 23 Hypogeums, it looks like you used to be able to get to them but various signs warn against it and apparently a rock fall has blocked the way.