A camper at a popular beach on Queensland's Sunshine Coast has described the terrifying speed with which a sinkhole swallowed a car, caravan and camping trailer.

The sinkhole opened up at the Inskip Point camping area near Rainbow Beach around 11pm on Saturday, growing to about 100 metres by 100 metres and around three metres deep.

Camper Melanie Wotherspoon described her horror in a Facebook post.

"Yep, can't believe we made it out," Ms Wotherspoon wrote.

"I thought we were goners for sure, was truly scary how fast it came into our camp site and swallowed it up."

Debris can be seen in the water where the sinkhole opened up. (Courtesy of Clayton's Towing).

Water laps at the edges of the sinkhole. (Courtesy of Clayton's Towing).

A woman ran through nearby campsites, screaming at people to wake up and get out, the ABC reports.

Police and SES crews raced to the site, where no one was reported injured or missing.

It's believed up to 140 people were evacuated from the area and others were warned to pack up and get ready to leave.

The hole could be linked to a number of small earthquakes in the region in recent weeks.

No one was reported injured. (Courtesy of Clayton's Towing).

Staff from the Department of National Parks, Sport and Racing are on the scene but it's unclear at this stage whether the camp grounds are closed.

In 2011 a similar sinkhole emerged at the same campsite, again with no injuries.

With AAP.