a collapsed cave system that is an open to the sky lagoon with wild jungle, flora and fauna

a collapsed cave which forms a hidden lagoon at the centre of a small island - pretty common in this bay filled with pointy islands of sheer limestone (very similar to the karsts around Yangshuo)

a hollow center to an island or room in Thai

a lagoon enclosed within an island, accessible only by canoe through hidden tidal caves and passageways

A mercantile establishment or factory for foreign trade in China, as formerly at Canton; a succession of offices connected by a common passage and used for business or storage.

One of the large trading companies of the colony.

From the early 19th to the 20th century, a hong referred to a trading company or store out of Hong Kong, Macau and Canton, China that did internal trade with southern China. The term is transliterated from the Cantonese word 行.