Hin Daeng and Hin Muang

Remote twin pinnacles ('red rock' and 'purple rock') far south of Phi Phi near Koh Lanta, considered among Thailand's top dive sites for deep walls, purple soft corals, manta rays and whale sharks in season. Reached from Phi Phi only on long full-day trips offered by some centres (Phi Phi Scuba, Sea Frog) in good weather; advanced divers.

Hin Daeng and Hin Muang is a dive site in the open sea south of Koh Phi Phi, a full day trip from Tonsai.

Not that we know of. This page on kohphiphi-live.com shows what Hin Daeng and Hin Muang is and where to find it.