Mr. Gregory Smith, P. Geo, Director of Sierra Madre, is a Qualified Person as defined by NI 43-101, and has reviewed and approved the technical data and information contained in this news release. Mr.

Sierra Madre Gold and Silver (TSXV: SM) has accelerated the timeline to bring the Guitarra mine complex in Mexico back into commercial production after acquiring the project in early 2023.

The prehistory of the northern Sierra Madre Occidental of Mexico is poorly understood. This article reviews previous research in the region and describes the archaeology of the Rio Taraises (Lister ...

These are just some of the 250 million or so Monarch butterflies that overwinter here in the Sierra Madre mountains in the highlands of central Mexico. Every November, this particular patch of ...