Interra Copper Corp. provides the following summary of its exploration and drilling activities at its 16,080 Ha Tres Marías Copper Project ("Tres Marías" or the "Project"), located approximately 18 km southwest of the city of Calama in the Antofagasta Region of Chile. The Phase 1 drilling program was completed in June 2023.

Six (6) RC holes totalling 1,896 meters were completed and processed chip samples were sent to ALS Global in Santiago for analysis. This drilling represents testing of the first target and roughly 1/5th of the initially planned exploration program, which was planned to consist of a total of 10,500 m of reverse circulation ("RC") drilling across three target areas within 16,080 ha of contiguous concessions. The objective of the program is to test a number of targets identified to date, utilizing reprocessed historical airborne ZTEM and 3D inversion of this airborne data, a 504 km UAV high-resolution magnetic survey, and a 29 line-km GDAS 3D induced polarization survey completed by Alto Verde Copper.

The initial phase of drilling of the combined geological-geophysical-geochemical anomalies did not intersect substantial economic copper mineralization, however the assays highlighted several important anomalies in the six-hole program. Most notably hole TM23R-003, intersected a dacite dyke with moderate quartz-sericite alteration, along with veinlets of hyaline quartz with halos of sericite and grey sulphides, and very thin and irregular veinlets of pyrite, grey sulphides, and specific pyrite-molybdenite sections. Numerous geochemical anomalies were noted, including: Zinc: average of 350 ppm Zn and a peaks of 1450 ppm Zn; Lead: average of 178 ppm Pb and a peak of 1960 ppm Pb; Molybdenum: average of 12 ppm Mo and a peak of 180 ppm Mo; Copper: anomalous concentrations and a peak of 211 ppm Cu; and, Silver: anomalous concentrations and a peak of 6.7 ppm (g/t) Ag.

The results from hole TM23R-003 are interpreted to potentially represent a distal base metal front emanating from a porphyry copper system and may warrant follow-up work. Two of the six drill holes, TM23R-001 and TM23R-004, returned some localized anomalous concentrations in Pb, Zn, Cu and lesser Ag. Drill holes TM23R-002, TM23R-005, and TM23R-006, did not return and significant values but were elevated in zinc over the entire length of each hole.