Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Macquarie Island' has mentioned 'Isthmus' in the following places:
Occurrence Sentence Text Source
Since 1948, the Australian Antarctic Division (AAD) has maintained a permanent base, the Macquarie Island Station, on the isthmus at the northern end of the island at the foot of Wireless Hill.
[13] The paper indicates that a tsunami caused by a local earthquake could occur with no warning possible, and could inundate the isthmus and its existing station.
[4] The island consists of plateaus at north and south ends, each of 150xe2x80x93200xc2xa0m (490xe2x80x93660xc2xa0ft) elevation, joined by a low, narrow isthmus.