Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_84 (iucn VARCHAR, district VARCHAR, reserve VARCHAR)

### Question ###
What is the IUNC of district of Cayo and reserve of Actun Tunichil Muknal?

### Accurate SQL ###

SELECT iucn FROM table_name_84 WHERE district = "cayo" AND reserve = "actun tunichil muknal"