We booked our tickets to see the hypogeum in January for a July tour. Only 60 people are allowed a day in groups of 10. The tour starts with a general overview of how it was found. There is a small replica of the Sleeping Lady that visitors can touch. After this, visitors watch a short film regarding the history of the site. From here, visitors tour the hypogeum, which at this point is roughly 45 minutes in length. It is very dark and wet, so one should have proper footwear to accommodate such conditions. The tours are with audio whisper devices, with a tour guide giving enhanced information and answering questions. No photos are allowed. I thoroughly enjoyed this trip, and hope to see the Tarxien Temples next time.