Date: April 28, 2022
On our way back to Puerto Aventuras, we visited a cenote called "Cenote Ucil":
It is in a chamber that is open to the outside at the top. Here is the hole in the ceiling:
There is also a stairway leading from a small side entrance:
The water is nice and blue:
It is also very deep. In fact it is 118 meters deep. It has apparently been used for free diving competitions.