香港遊踪系列 - 果州群島 Ninepin Islands

香港在久遠年代處在火山爆發地帶，火山爆發流出岩漿，後冷却形成石柱。而今我們可在多處，例如果州羣島和萬宜水庫，看到這些凝灰岩石柱。尤其在果州看到十分明顯的六角石柱。

岩漿活動

六角型石柱	凝灰岩石柱	風化後的形狀
風化後的洞穴	果州群島風浪急	乘大船再乘小船上岸
	島上植物

The rocks of the Ninepin Group are amazing. You can see blocks of tuff 凝灰岩standing upright on the cliffs with hexagonal joints which are so clear that you cannot find in the other parts of Hong Kong. Such places as High Island Reservoir, Po Pin Chau, Basalt Island, Bluff Island and Tiu Chung Chau have the similar type of rock. They were formed long time ago when large amount of volcanic ash were ejected, deposited and cooled. It is an interesting place to visit.

Ninepin Group is famous for the large number of sea caves that you can get through by small boats. However, since it is located on the south-eastern part of Hong Kong where strong winds frequently blow, you must try this adventurous game when the sea is calm or it will be very dangerous. Why are there so many sea caves at Ninepin Group? The reason is very simple. Ninepin Group is made up of the volcanic rocks, tuff with hexagonal joints. As it is exposed to the strong erosional force of the wave action, the rocks are easily eroded forming the sea caves. When the sea caves continue to be eroded, sea arches are formed. On the sea arch shown on the right, there is a small temple of Tin Hau where you can worship.

There is no frequent public ferry going there. However, most of the local tours will organise trips to this place. So don't miss your chance to visit this extraordinary place.