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_68 (uk_broadcast_date VARCHAR, countries_visited VARCHAR)

### Question ###
What was the broadcast date of the episode that visited South Africa?

### Accurate SQL ###

SELECT uk_broadcast_date FROM table_name_68 WHERE countries_visited = "south africa"