(1) What is the Northern-most town in mainland Australia?
Answer: Bamaga (Queensland).
(2) What is the Eastern-most town in mainland Australia?
Answer: Byron Bay (NSW).
(3) What is the Western-most town in mainland Australia?
Answer: Useless Loop, WA (Denham also accepted).
(4) What is the Southern-most town in Australia?
Answer: Dover (Tasmania).
(5) Where is the lowest point in mainland Australia?
Answer: Kati Thanda (Lake Eyre), SA.