Where: Southeast Asia · Asia · approx. 6.9, 122.08 (vicinity only)
Why this spot: Spanish fortress of 1635 guarding the Basilan Strait, now a National Museum branch beside a busy esplanade
What turns up: modern sea glass, harbor pottery bits, eyes-only fort masonry
Access: Open / legal.
Modern glass on the public esplanade shore is fine; the fort is National Museum property and any old material is RA 10066 territory
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.