Lencois, BA: Chapada Diamantina diamond fields

Where: Brazil · South America · approx. -12.56, -41.39 (vicinity only)

Why this spot: Rockhounding locality: 1845 diamond rush town, once the world's largest diamond producer, now the gateway to Chapada Diamantina National Park

What turns up: eyes-only: garimpeiro-cut channels in the Serrano rock pavements, panning demonstrations, colored sand caves; no diamond removal

Access: Restricted.

Chapada Diamantina National Park (1985) prohibits all collecting; the IPHAN-listed town and old Serrano workings just outside are eyes-only, with guides demonstrating diamond panning as living history

Satellite view, historic-map overlays, tide/flow context and field notes are in the app. Exact research detail is part of Pro.