Reconstructing the complex machinery that once existed under the Colosseum floor by examining the hypogeum’s skeletal remains, he has demonstrated the system’s creativity and precision ...

Note: Keep in mind that most Colosseum tours only give you access to the arena floor and upper level. If you want to visit the hypogeum (Colosseum underground), you need to make sure it's included ...

All Colosseum tickets include entrance to the Roman Forum and Palatine ... also known as the hypogeum. Exploring these hidden ...