That mausoleum looks compact enough that they should be able to lift the entire thing and put it somewhere safe.

There are plans for the future public display of the mausoleum, which underwent significant modifications. A second mosaic directly beneath the first indicates it was raised during its lifetime. The two mosaics are similar, with a central flower surrounded by concentric circles.

Although the tomb was almost completely dismantled, probably during the medieval period, the signs are it was a substantial building, perhaps two storeys high, and would have been used by wealthier Romans, possibly as a family tomb.

Like peeling back layers of an onion.

There's another link on that same page about what appears to be the remains of a Roman alter that would have stood where the Leicester cathedral now stands. Folktale becomes reality as Roman altar unearthed at Leicester Cathedral. This was published in March, so apologies if I missed it the first time if it was shared here.