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_94 (vertical_relief__ft_ INTEGER, rank VARCHAR, location VARCHAR)

### Question ###
What is the mean vertical relief in feet when the rank is more than 40 and the location is va0573?

### Accurate SQL ###

SELECT AVG(vertical_relief__ft_) FROM table_name_94 WHERE rank > 40 AND location = "va0573"