Trash is correct...pax side, 4x8 inch panel. Might be a bit rusty. access that and you have a direct shot at the gas tank.
Gizmo ........ Remember if you run into any rusty screws or break a plastic type nut.....flopp it, your local Toyota dealer has all the parts you need. No worries....
Good luck....
Trash I like your new photo............hahahaha