"Then from there the only way to go to this place is by a boat. Armed native individuals can offer you a "cheap" $500 trip on a small boat, so in three days you can be on spot. They can show you the fields of wild hemp flower around which, as some tourists say, often can be picked up by your guide while you are exploring the stone forest, and then boiled together with some milk to meet you when you are back in camp with some mind blowing mixture. And they are all armed there, those natives...."More photos at Oddity Central
Where in the world is it?: Location via Google Maps