Explore › Southern Europe bottle digging
Porto: Foz do Douro / Afurada mouth
BOTTLE DIGGING
GRAY AREA
DOCUMENTED
Where: Southern Europe · Europe · approx. 41.14, -8.66 (vicinity only)
Why this spot: 1700-1935
What turns up: Port-bottle dark glass, porcelain bits
Access: Gray area.
Surface only; the Sao Paio estuary flats are a nature reserve - stay off protected mud.
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.