KRABI: The chief of Than Bok Khorani National Park has closed Phi Hua To cave indefinitely after park rangers found cracks in the rock following an earthquake centred in northern Sumatra early on Tuesday morning.
Park chief Siriwat Suebsai said there were small rockfalls and cracks opened up in the cave, which is in Ao Luk district.
A 4.8-magnitude quake was recorded in northern Sumatra at 4.12am on Tuesday.
The cave was closed for the safety of visitors, he said.
A crack that appeared in the cave after the earthquake in Indonesia. (Photo: Department of National Parks, Wildlife and Plant Conservation)