Tonga · North coast of 'Eua
Cathedral Cave
Also known as: The Cathedral
Best time to dive
June to October
Certification & difficulty
Advanced Open Water - advanced conditions (currents/depth); dive within your training.
Snorkelling
Not a snorkel site - Not viable - scuba only, entrance too deep and site is a true cavern/overhead environment
Safety notes
Overhead/cavern environment requiring guide and navigation skill, swell and surge at the entrance, weather-dependent boat access from 'Eua/Tongatapu
Permits & fees
None specific found; access is via licensed local dive/tour operator
Permits and operators change - confirm before booking.
Location
Nearest hub: 'Eua
This profile is desk research, compiled from public sources - not a first-hand dive report. Coordinates are approximate.