Salerno to Rome with stop at Herculaneum

We took the train from Sorrento to Rome, stopping at Naples and Herculaneum, about 15 years ago. I don't specifically recall the lockers but there must have been. I don't recall touring either place with luggage on our backs. The RS Italy guide book may definitively tell you about lockers in those train stations but I'm sure they have them (especially a large city like Naples).

Here is info from the Wikitravel Herculaneum site: The Circumvesuviana trains take 25 minutes to get there from Naples and 40 minutes from Sorrento. To get to the ruins, get off at the Ercolano Scavi station, from where you exit into a small square. Exit diagonally right (the only way out of the square) and walk 8 blocks downhill to the big arch - the Herculaneum ticket office & baggage check are about a further 2 minutes walk thought the arch (pick up bag 30 minutes before site closing). The private 'tourist office' to your left when you come out of the station runs good value trips up Vesuvius. They also offer lifts to the ruins for 3 euros. Beware - there are two train stations in Ercolano, the Ercolano Scavi Circumvesuviana station is on the Sorrento-Naples line, the trains on the Naples-Salerno stop at the Porticini/Ercolano station. The Herculaneum site is not signposted from this station. Herculaneum is well worth a visit - I think it is a more interesting site than Pompeii, certainly much smaller (because the modern town is built on top of it) and less busy. Enjoy!