Where: India & Indian Ocean · Asia · approx. 8.57, 81.24 (vicinity only)
Why this spot: Portuguese-Dutch-British fortress on Swami Rock guarding one of the world's great natural harbours, garrisoned 1624 to 1948
What turns up: eyes-only: fort walls, VOC-era gateways, cannon; modern sea glass on Dutch Bay strand
Access: Restricted.
Fort Fredrick is an Archaeological Protected Monument still garrisoned by the Sri Lanka Army: strictly eyes-only inside. Walk Dutch Bay sand below high water for glass only, no digging
Open in Mudlark Map →
Satellite view, historic-map overlays, tide/flow context and field notes are in the app. Exact research detail is part of Pro.
Pins are approximate by design. This page is historical research, not permission to dig. Check ownership and local law first.