SQL & PL/SQL :: DESC All Tables

I am a newbie to Oracle and trying to write something to basically loop through all tables and do a DESC for each table,

I have the following code

set serveroutput on
begin
FOR cursor1 IN (SELECT * FROM ALL_TABLES where OWNER='ABC' ORDER BY TABLE_NAME)
LOOP
DBMS_OUTPUT.PUT_LINE(cursor1.TABLE_NAME);
FOR cursor2 IN (select * from cols where TABLE_NAME=cursor1.TABLE_NAME ORDER BY COLUMN_NAME)
LOOP
DBMS_OUTPUT.PUT_LINE(cursor2.COLUMN_NAME);
END LOOP;
END LOOP;
end;

Although the above code works, I would like to have the DESC TABLE_NAME instead of just displaying the column name so I can see the properties of the column.

I couldn't get the DESC part to work