Where: Mexico · North America · approx. 20.2, -98.6 (vicinity only)
Why this spot: Rockhounding locality: obsidian in rhyolitic volcanics
What turns up: obsidian, rainbow/sheen obsidian
Access: Gray area.
Some obsidian sources are archaeologically protected; collect only outside protected zones.
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.