Lisa,
You are right, the boulders wre in Riomaggiore.
I am also of Italian descent. We decided on the north central part of Italy because when we visited Italy on our honeymoon in 2000, we only went to Rome and Naples. The country is so large and diverse, it's hard to get the true flavor of it just by visiting a specific area. I had seen a special on the Travel Channel with Rick Steves. Rick visits Europe every year for four months and then writes books and travel guides on specific areas. I saw the Cinque Terre special a few years ago and knew I had to see the area with my own eyes. So, I bought his guidebook and DH and I mapped out our route. I used a travel agent for my airlines tickets and did everything else through the internet. There we a couple of glitches but for the most part, everthing was great!