West Wall

West Wall is a copper-gold-molybdenum porphyry deposit lo - cated in the Valparaiso Region of Chile, approximately 100 km to the northeast of Santiago. The project has two distinct mineralized zones: Lagunillas and West Wall Norte. The mineralization zones are part of an extensive north-northeast striking hydrothermal alteration zone of approximately 9 km by 4 km. The royalty covers the Lagunillas and West Wall Norte zones, which comprise the existing resource on West Wall.

Glencore noted in their 2024 Mineral Reserves & Mineral Resources report that West Wall’s Indicated Mineral Resources grew to 891Mt at 0.50% copper, 0.04 g/t gold and 0.01% molybdenum. In addition, Inferred Mineral Resources increased to 1,500 Mt at 0.38% copper, 0.03 g/t gold and 0.01% molybdenum. The changes to the West Wall Mineral Resource estimate reflect updated economic assumptions and pit optimization.

Metalla holds a 1.0% Net Proceeds Return royalty on West Wall.