The sinkhole, now the size of a football pitch, is in the Wide Bay-Burnett region of South East Queensland.
The latest update shows that the cavity now has stretched to a lenth of 200 metres, a width of 50 metres, and a depth of nine metres.
It has grown since it was first noticed on Saturday night near a popular camping site at Inskip Point.
Holidaymakers at the site, near a popular Queensland beach, were woken up suddenly overnight as the ground gave way.
"I hear a bit of commotion going on and when we woke up we looked out and there was the police up here with the lights on and people running round saying the sinkholes taken everyone's van and what have you."
"We were just going for a cruise and then all of a sudden we came to stop over here and there was SES truck and then there was coppers and it was hectic. There was just this hole, we didn't even know there was a caravan in it."
Thee hole swallowed a car, a van, a camping trailer, and tents over the weekend.
Although the whole tourist site remains relatively stable, campsites near the sinkhole have been closed.
About 300 people have evacuated the area.
No injuries were reported.
The Queensland Parks and Wildlife Service will continue to monitor the situation and will consult engineers to provide an assessment of the site.
During an interview with the Australian Broadcasting Company, geotechnical engineer Allison Golsby said the area has a history of sinkholes, and scientific reports indicate the entire peninsula could eventually fall away.
For CRI, this is Fu Yu.
