20240907 Lake Cave & Mammoth Cave 

Day 145 (part 1): 今日項目之一係去睇兩個岩洞（Lake Cave & Mammoth Cave）西澳南面地質主要係沙岩結構，所以形成咗好多岩洞，有啲有導賞團，有啲就買飛自己行，今朝就揀咗個導賞團（Lake Cave）同埋自己行（Mammoth Cave）。
Day 145 (part 1): One of today’s activities was to visit two caves (Lake Cave & Mammoth Cave). The geology in the southern part of Western Australia mainly consists of sandstone formations, which have resulted in many caves. Some have guided tours, while others you can explore on your own with a ticket. This morning, I chose a guided tour (Lake Cave) and a self-guided tour (Mammoth Cave).