Phase Two Exploration At The South Mountain Project

BOISE, ID – Thunder Mountain Gold Inc. announced the commencement of Phase II field exploration at its South Mountain Project in Owyhee County, Idaho. This advanced exploration campaign marks a significant step in targeting deeper porphyry systems and expanding the footprint of the known Carbonate Replacement Deposits (CRD)/skarn mineralization.
Building on the success of earlier fieldwork, the Phase II program integrates deep-penetrating geophysical tools and the expertise of a multidisciplinary team. Central to this phase is a state-of-the-art Magnetotelluric (MT) survey, designed to image conductive anomalies at depth that may reflect porphyry copper-molybdenum systems beneath the known high-grade zones.
“The launch of Phase II reflects our commitment to unlocking the full scale of the South Mountain system,” commented Eric T. Jones, President & CEO. “With John Reynolds and our extended technical team, we’re executing the most comprehensive and technically advanced exploration campaigns in the Company’s history. These efforts will significantly enhance our understanding of the deeper copper-molybdenum porphyry potential while advancing South Mountain as one of the more compelling high-grade CRD systems in North America.”
The MT and IP surveys will be conducted through late summer, while interpretation and 3D modeling will follow in Q4 2025. Drill target prioritization is underway for a potential late-year 2025 or early 2026 program. All activities are being completed in alignment with Thunder Mountain’s permitting framework on private land, ensuring an efficient path toward project development.