Local trail steward page on the park size, private-land note and access guidance.
Dramatic shore chasm in Gloucester.
Rafes Chasm is a dramatic New England shore dive off Gloucester's Magnolia coast, reached by a wooded walk to a rocky chasm in the granite ledges. The site rewards experienced divers with a giant-stride entry option, ledges and boulders, and a lively mix of bass, lobsters and other ledge life, but it demands careful tide and swell timing because exits can become difficult fast. It is a local, hands-on shore dive rather than a relaxed swim spot.
Conservative baseline from public research. No community dives logged yet.
Depth range, seasonality, and planning context.
Reported Depth
0m - 15.2m
Depth Note
Reported max depth is about 50 FSW, or around 15 m, on the main dive route.
Best Season
Between the tides, ideally around high tide when winds are light from the north.
Typical Conditions
Exposed open-ocean granite shore with quick-building swell and slippery exits.
Site conditions, restrictions, and access requirements.
Site Conditions
Safety Notes
Go only when the tide and swell are suitable, and carry a cutter if fishing lines are present.
Access Restrictions
Shore access only; plan on the wooded walk, rocky shoreline and careful tide timing. Some surrounding land is private.
Legal Notes
Observe private-property postings and stay on the park access path rather than wandering onto adjacent private shoreline.
Community notes to help plan your visit.
Scuba Diving
Advanced shore dive with a protected entry pool, granite ledges and a demanding rocky exit.
Freediving
Not recommended as a freedive site because the surf, ledges and exit demands are high.
Snorkeling
Casual snorkeling is secondary here; the shoreline is better suited to tidepool viewing and experienced shore diving.
Species commonly reported at this site, with direct links into their wildlife guides.
Community dive logs and visit reports for this site.
Average conditions based on logged dives & visits.
Planning answers for access, conditions, timing, and site logistics.
Last Updated
Research Sources
Local trail steward page on the park size, private-land note and access guidance.
Local tourism write-up on the park, access trail, tide timing and dive hazards.
Dive operator page covering Rafes Chasm access, surge, max depth and fish life.
Official coast guide note on the wooded path, rocky shore and small fenced-in parking lot.
Know this site? Improve Spot Details.

Challenging Cape Ann shore dive with lobstering and rock ledges.

Advanced Cape Ann wreck dive outside Gloucester Harbor.

Stage Fort Park is a Gloucester shore training site with easy park access.

Shallow historic wreck off Graves Island in Manchester-by-the-Sea.

Rocky Gloucester shore dive with a wall and working-harbor traffic.

Beginner shore dive in Rockport with boulders and gravel.