An extraordinary show of support for the Australian Wallabies Rugby World Cup team will be emblazoned across the countryside near Wagga Wagga tomorrow (Wednesday 13 October).

A 1km long wallaby will be slashed in to a bright yellow field of canola by a group of Charles Sturt University science students, to support the national team and as a practical lesson in remote sensing and high-tech survey techniques.

The geoglyph - a picture cut into the earth big enough to be visible on satellite images - will be created on a property called Kia-Ora (owned by a local farmer Peter Cowled) about 45 km north of Wagga Wagga on the main road to Temora, about 6 km past Old Junee.

The major work is expected to take place between 11am and 2pm, by which time the giant wallaby should have taken shape.

The first attempt at a similar project by CSU lecturer in remote sensing/geographic information systems (GIS) Paul Frazier was a map of Australia, about half the size of this year's plan, cut into a purple field of Patterson's curse last October.

Mr Frazier says the canola field targeted for this year's drawing board is in full yellow flower, and slashing should expose red soil and dead vegetation giving a good contrast between the paddock and the wallaby both for aerial photography and satellite imagery.

"Students from the integrated GIS and remote sensing course have been involved in planning the exercise for months now, and they'll be out there tomorrow using satellite navigation equipment and taking field spectral measurements to map out the picture," he said.

"Remote sensing students will be there too looking at the geoglyph and considering its design and how it will be seen from space. CSU will fly its airborne scanner over the geoglyph tomorrow afternoon, but the final test will be the picture taken from 700 kilometres over the earth in a week or so - Auslig have again agreed to supply a free Landsat satellite image over the geoglyph."