The anniversary weekend earthquake has opened the ground beneath several hillside caravan sites at a Castlepoint holiday park and jeopardised up to $15,000 in annual revenue, says site manager Kerry Ellis.
The 6.2 magnitude earthquake, which struck shortly before 4pm on Monday, created a fissure in places up to 4cm wide under a number of premium hillside caravan sites, some of which have been occupied for up to two decades at the seaside Castlepoint Holiday Park and Motels.
Engineers were to inspect up to five caravan sites, spread between the top and a lower terrace, that could each be at risk of slipping down the hillside, he said.
"Most of the campers had gone by 10 or 11 in the morning on Monday but a few stayed on because it was such a beautiful day. The wind dropped off, the sea was like glass. It was just gorgeous. Then it hit."
Mr Ellis, who with wife Lynell has lived in the area "on and off" for about 20 years, said each of the threatened sites was vacant on Monday afternoon, with the owner of the caravan sitting above the worst of the damage having left only hours before the quake struck.