Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Reserve | District | IUCN | Co-management | Est. | Description |
| --- | --- | --- | --- | --- | --- |
| Actun Tunichil Muknal | Cayo | Ia | Belize Audubon Society ; Institute of Archaeology | 2004.0 | Terrestrial. |
| Blue Hole | Belize | III | Belize Audubon Society | 1996.0 | Marine. |
| Half Moon Caye | Belize | II | Belize Audubon Society | 1982.0 | Marine. |
| Thousand Foot Falls | Cayo | III | — | 2004.0 | Terrestrial. |
| Victoria Peak | Stann Creek | III | Belize Audubon Society | 1998.0 | Terrestrial. |
Question:
What is the IUNC of district of Cayo and reserve of Actun Tunichil Muknal?
Answer:
Ia