Along with their calendars -- the Tzolk'in, the Haab and the Long Count -- the Mayans also created their own math system. They used a series of dots and bars to signify numbers. One dot equaled one unit, while one bar equaled five units. A shell symbol signified zero.
Nullarbor is bounded in the west by the Western Australia-South Australian state border, in the south by the coastline adjoining the Great Australian Bight, to the east by the localities of Yalata and Yellabinna and to the north by the Trans-Australian Railway.ullarbor is located within the federal Division of Grey, the state electoral districts of Flinders and Giles, and the unincorporated area of South Australia.
Nullarbor Roadhouse is located 94 kilometres west of Yalata, 187 kilometres east of Border Village, and 201 kilometres east of Eucla.In 1866 E. Alfred Delisser surveyed the Nullarbor Plain and noted a marked absence of trees.Contrary to some popular opinions the word Nullarbor is not of Aboriginal origins.In fact the local Mirning people referred to the area as Oondiri which is said to mean the waterless. Delisser derived the term Nullarbor from the Latin nulla for no, and arbor for tree.ontrary to some popular opinions the word Nullarbor is not of Aboriginal origins. In fact the local Mirning people referred to the area as Oondiri which is said to mean the waterless. Delisser derived the term Nullarbor from the Latin nulla for no, and arbor for tree.