This is a strangler fig tree, Inside this tree is a hollow space where a different #tree stood.
The strangler fig's seeds have made their way into the canopy of a host tree and germinated. As the fig's roots grow, they cascade down the trunk,
Once they are in the ground it competes for nutrients and water with the host. Then It gradually tightens its grip around the host tree
This process hinders the flow of water and nutrients, causing the host tree to weaken and eventually die.
@BettyNurbaety

It is raining season here in Mexico City

Pentax MX
Ilford HP5+