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_30134667_2 ( circuit VARCHAR, location VARCHAR )

### Question ###
What is the circuit located in baltimore , maryland?

### Accurate SQL ###

SELECT circuit FROM table_30134667_2 WHERE location = "Baltimore , Maryland"