Crypt of Saint Mary

The crypt is under the church.
It was built because the ground is uneven.
This means there is a difference in height.

From here you can see semicircular arches.
These are rounded arches.

The arches allow passage under a buttress.
A buttress is a wall that supports the building.

This space has two functions:

• To support the apse of the church
• To allow water to pass through a channel

The apse is the back part of the church.
The channel carries water.

This place shows an important idea:
Oliva has learned to live with water.
The town builds over it without losing balance.