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_66 (date__from_ VARCHAR, location VARCHAR)

### Question ###
On what date did the event at Zaltbommel begin?

### Accurate SQL ###

SELECT date__from_ FROM table_name_66 WHERE location = "zaltbommel"