The Carmel caves are an easy WHS to tick off. They are conveniently located close to route 4 and make a nice stopover when travelling between the WHS of Tel Aviv and Haifa. As for all fossil sites, don't expect to see much. There are a few descriptions, a few stone age tools, a film and in one of the 3 visible caves some puppets, recreating the live in the cave. But the landscape is nice and the caves are really easy to reach. You can enter one of them; the others are seen from the outside. About half an hour should do it to visit the site.