Gran Colombia Gold Corp. announced results from the recently completed Phase 2 diamond drill program at its 100%-owned Toroparu Project in Western Guyana. The 10,494 meters Phase 2 program was designed to confirm the continuity of both the northwest oriented high-grade gold structures and the cross cutting east-west high-grade structures that create a repeatable pattern of intersecting zones amenable to underground mining methods over the 4 kilometer strike length of the Toroparu Project. Assay results from the 2021 Phase 2 High-Grade Definition Drill Program extend high-grade mineralization to the northwest of historical drilling and confirm a 4-km overall strike length of Toroparu Deposit Area. Drill results identify several additional concentrations of high-grade gold contained in intersecting NW-SE and E-W structures (“pipes”) that occur in a repetitive pattern across the deposit. These structural pipes exhibit continuity over 2 metre ("m") to 25 m widths extending over 30 to 100 vertical metres and confirm the potential for significant volumes of gold mineralization amenable to underground mining methods exists along the 4 km Toroparu Deposit Area. The high-grade mineralized pipes, ranging in grade from approximately 5 g/t gold ("Au") to greater than 20 g/t Au over potentially mineable widths, are often surrounded by a lower grade (0.5 - 5.0 g/t Au) halo of mineralized material. The high-grade gold grades intersected in structures range from 2.42 g/t Au to 101.7 g/t Au and have a length-weighted average grade of 6.7 g/t Au (uncut) over 113 m and 76 intervals highlighted in this release. Since historical drilling has been limited to the upper 450 m of vertical extension of the deposit, this remains open at depth across the 4-km of strike length at depths that are relatively shallow for an underground mine. Results from the most northwest set of drill holes, which intersected multiple high-grade intervals indicate that the high-grade structural component of the deposit is still open along strike to the northwest. High-grade gold-mineralized intercepts within the deposit are associated with the occurrence of native gold, sulfides, and quartz-carbonate veins or veinlets that crosscut most lithologies except for late-stage mafic dikes. Additionally, the geologic structural model is validated by structural measurements from 2020 and 2021 oriented core measurements that indicate an orientation of NW-SE and an overprinting orientation of E-W in the Toroparu Deposit Main and Northwest Areas. The 2021 diamond drilling program consisted of 10,494 m of drill core from 42 holes (TPD540 through TPD580) drilled to lengths of up to 640 m. Core samples for the drill program were collected over 0.5 m to 1.0 m intervals within the mineralized zone and 1.5 m intervals in the barren intervals. The sampling has been driven by sulfides content, quartz carbonate vein density, and lithological discrimination of barren mafic dikes. Half-core was submitted to MS Analytical Labs in Georgetown, Guyana for analysis. Gold was analyzed by fire assay atomic absorption reading and gravimetric reading greater than 10 ppm. A standard quality control procedure has been applied including blanks, standards, and duplicates. The total cumulative diamond drilling on the Upper Puruni Concession as of July 6, 2021 is 245,693 m in 1,091 diamond drill holes (“DDH”) including 600 DDH totaling 199,223 meters drilled at Toroparu and 184 DDH totaling 21,963 m drilled at Sona Hill.