THE ADVENTURE COLLECTIVE® · Independent discovery and booking for outdoor travel
Jump from a speedboat into ancient lava caves and swim beneath bell-shaped sea arches in Hong Kong’s UNESCO Global Geopark. This short, guided coasteering tour highlights hexagonal basalt columns and offers close-up geology with safety gear included.
Jump from a speedboat into ancient lava caves and swim beneath bell-shaped sea arches in Hong Kong’s UNESCO Global Geopark. This short, guided coasteering tour highlights hexagonal basalt columns and offers close-up geology with safety gear included.
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Operated by Splitdyboat · Sai Kung, Hong Kong
The day begins at a bright, bustling pier in Sai Kung, where the speedboat cuts through teal water and spits spray across your face. In minutes the skyline of town falls away and the Ung Kong Group’s volcanic coastline rises: exposed hexagonal columns and bell-shaped arches sculpted by ancient lava and relentless waves.
moderate.
2 hours.
Comfortable with short swims and basic scrambling; good balance and core strength helpful
Transfers are short—typically 10–20 minutes each way depending on sea conditions and exact landing points.
Yes—operators provide child-sized life jackets, but children must be confident in the water and accompanied by an adult.
Operators cancel or reschedule tours if sea conditions are unsafe; the cancellation policy usually allows a full refund with 24 hours’ notice.
No prior experience required; guides give a safety briefing and assist with entries, but basic swimming comfort is necessary.
The Ung Kong Group’s columns formed during Miocene-Pliocene volcanic activity; some cave walls retain marks from mid-20th-century military exercises.
Operators emphasize small group sizes and ‘pack it in, pack it out’ practices; avoid touching delicate rock formations and marine life to prevent damage.
Splitdyboat operates guided outdoor trips and adventures with an emphasis on safety, stewardship, and memorable experiences.
Book with Splitdyboat
Book directly with Splitdyboat for the best rates and real-time scheduling.
Reserve Now