The 2 Rok Islands – Koh Rok Nai and Koh Rok Nok – are tiny paradises 30 km south of Koh Lanta. Small, rugged and mostly unspoilt, they’re home to an impressive coral reef system, pristine white-sand beaches, a small ranger’s station, a restaurant and very little else.
As part of the Mu Koh Lanta Marine National Park, the Koh Rok Islands have a thriving underwater ecosystem, where divers and snorkelers can encounter sea turtles, moray eels and black-tip reef sharks. On land, on Rok Nai, the beautiful Koh Rok Waterfall is well worth seeing.
There’s no public boat service to the Koh Rok Islands, but there are tour companies operating speedboat or long-tail boat day trips there from Koh Kradan, Koh Muk, Koh Ngai or Koh Lanta. You’ll need to pay around 400 baht entry fee on arrival at Koh Rok – the national park entry fee. Tours are not available from May to November as the islands are usually closed during this time because of the rough weather.