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You'd better check that Joe with the national park. We had a trip scheduled to Hin Daeng and Hin Muang on 24 July, but have been told the park is closed and are not allowed there. Considering the group we have on this trip that is fortunately ok for us.<snip>
Similans, Surin, Richelieu are open mid-October till April. But HD/HM is open year round, and we are running a HD/HM Koh Ha 2 day 2 night trip Aug. 9th to 11th on the MV Aragon. If anyone is interested you can contact me through the email my signature.