Ang Thong Marine Park - a steep climb to a lookout over the emerald inland lagoon and a scatter of limestone islands

The line through Gulf of Thailand (Surat Thani), Thailand - waypoints, elevation and the day-by-day shape of the walk.
Year-round (park may close in monsoon)
Heat, humidity; rough rock
Boat-access; the park can close in the monsoon (roughly Nov-Dec). Confirm.
A steep, rough climb from a beach to an archipelago viewpoint
Non-technical walking/hiking; confirm any exposed or scrambly sections locally
Marked/waymarked route; navigation generally straightforward - carry a map and confirm locally
Suitable for reasonably fit hikers; not wheelchair accessible - confirm specifics
A popular, well-known route - busier in peak season
The lagoon viewpoint plus kayaking/snorkelling
Ang Thong Marine Park (by boat), from Koh Samui
Boat/day-tour from Koh Samui
Day route - none needed
Day-hike kit, water, sun/rain protection, sturdy footwear; coverage varies
Services in Koh Samui; limited or none on the trail
Not required; self-guided
Marine-park fee; boat/tour access from Koh Samui. Confirm.
Permits and operators change - confirm before booking.
The steep rough climb, heat, boat logistics
Retrace the route to exit; dial local emergency services; carry a means of calling for help where remote
This profile is desk research, compiled from public sources - not a first-hand trail report. Coordinates are approximate.