Thunder Mountain Gold Inc. reported a newly filed NI 43-101 Mineral Resource Estimate ("43-101 43-101 MRE") incorporating results from surface diamond drilling program conducting in 2021 at the South Mountain Project ("South Mountain" or "South Mountain Project" or the "Property") in southwestern Idaho, U.S.A. The updated 43-101 MRE includes an increased resource for the Project while maintaining the high-grade mineralization. The updated Independent 43-101 MRE, which has an effective date of October 16, 2023, was prepared in accordance with National Instrument 43-101 Standards of Disclosure for Mineral Projects ("NI-43-101") by Hard Rock Consulting, LLC, based in the U.S.A.