Montanha

Mong-chau, or Ballast island, bears N.N.W., distant 2 1/2 miles, from the west point of Montanha, and between them there are two passages leading to Macao, but both so shoal at low Avater as only to afford a passage for boats.

Source: wiktionary

The junk which was used in the raid on Cheung Chau, it will be remembered, was seized by the Portuguese police at Macao lying off Lappa. It was in consequence of these facts that the Hongkong Government made the strong representations to the Government of Macao and to the Chinese Authorities at Canton which resulted in a junk expedition made up of Portuguese and Chinese troops, assisted by several armed vessels, to the island of Wong Kam, known by the Portugues at "Montanha."

Source: wiktionary

Macau will never be able to overcome its limitation posed by its tiny size, unless after 1999 the Central Government in Beijing would be generous enough, to make the adjacent islands D. João and Montanha part of the Macau SAR, which would increase the territory’s area at least three times.

Source: wiktionary

1937 (3 December) Memorandum on boundaries of Macau relating to Lapa, Dom João and Vong Cam (Montanha) signed between consul for Portugal and consul for Japan in Hong Kong. 1937 (28 December) Japanese bombing of Montanha (Hengqin) Island and Portuguese occupation of Man Lio Ho village.

Source: wiktionary