Endeavour Silver Corp. (TSX: EDR) (NYSE: EXK) is pleased to report continued high-grade drill results from its ongoing exploration program at the Guanacevi Mine in Durango State, Mexico.

The Company continues to drill the El Curso property, which covers the prolific Santa Cruz vein between Endeavour’s previously mined Porvenir Cuatro orebody and the Milache orebody currently being mined.

The Company recently amended its lease agreement relating to the El Curso property with Ocampo Mining SA de CV, a subsidiary of Grupo Frisco, to include rights to an additional 145 hectares of adjacent concessions covering the area between Porvenir Cuatro and Milache that connects the currently defined resources and workings. The drill results announced today are inclusive of these adjacent areas.

From early December 2021 through to mid-March 2022, 2,842 metres in 16 holes were drilled at Guanacevi from underground.

Highlights from Recent Drill Results

• 5.83 gpt Au and 1,278 gpt Ag for 2,534 gpt AgEq over a 7.5 m ETW, including 56.50 gpt Au and 22,562gpt Ag for 27,082 gpt AgEq over 0.47 m (UCM-93), extending the SCV orebody along strike
• 1.89 gpt Au and 975 gpt Ag for 1,126 gpt AgEq over a 7.6 m ETW, including 3.93 gpt Au and 3,690 gpt Ag for 4,004 gpt AgEq over 0.53 m (UCM-94), extending the SCV orebody along strike

Abbreviations include: gpt: grams per tonne; Au: gold; Ag: silver; ETW: estimated true width; m: metre; HW: hanging wall. Silver equivalents are calculated at a ratio of 80:1 silver:gold.

Dan Dickson, CEO, commented, “Guanacevi delivered exceptional exploration results in each of the past two years, and we expect this track record to continue. The drill results announced today are amongst some of the highest-grade intercepts we have seen at Guanacevi to date.”

Guanacevi – Santa Cruz (view SVC long section)

Note: Drill hole 87 returned no significant results

Silver equivalents are calculated at a ratio of 80:1 silver:gold. All widths are estimated true widths.

Qualified Person and QA/QC – Dale Mah, P.Geo., Vice President Corporate Development of Endeavour Silver, is the Qualified Person who reviewed and approved the technical information contained in this news release. A quality control sampling program of reference standards, blanks and duplicates has been instituted to monitor the integrity of all assay results. All samples are split at the local field office and shipped to ALS Labs, where they are dried, crushed, split and 250-gram pulp samples are prepared for analysis. Gold is determined by fire assay with an atomic absorption finish and silver by aqua regia digestion with ICP finish, over-limits by fire assay and gravimetric finish.

About Endeavour Silver

Endeavour Silver is a mid-tier precious metals mining company that operates two high-grade, underground, silver-gold mines in Mexico. Endeavour is currently advancing the Terronera mine project towards a development decision, pending financing and final permits and exploring its portfolio of exploration and development projects in Mexico, Chile and the United States to facilitate its goal to become a premier senior silver producer.  Our philosophy of corporate social integrity creates value for all stakeholders.