“A lot of trails on this island are on private land or on military training areas. “There could also be native species (or) cultural sites that you really shouldn't maybe go to.”

All of the extreme hiking websites based in Hawaii also include a disclaimer, warning hikers they won’t be held liable should someone die or injure themselves.

“We're doing this to share experiences, but we're not experts,” said Chatsuthiphan.  “We're not trail guides.”

Chatsuthiphan is never shy about expressing his limitations to others he goes hiking with.  If there’s a ridge he finds too challenging, he simply turns around.

“There should be no peer pressure,” he said.  “It's just hiking; it should be fun.”

The Department of Land and Natural Resources has a website of its own to give hikers a feel for what a sanctioned trail will be like.