It states in the website UNDER GEOLOGY AND GEOLOGICAL SETTING

http://steliasmines.com/projects/peru-projects/tesoro-peru/

GEOLOGY AND GEOLOGICAL SETTING

The Property is permissive for the expansion of known gold mineralized zones both on strike and to depth as well as the discovery of additional gold mineralization. The company is utilizing both traditional and cutting edge mesothermal gold exploration techniques too systematically (scientifically) advance the Project. These exploration techniques include; advanced Quantec advanced 3D-Titan24 geophysical surveys, sampling, underground development, systematic trenching, and diamond drilling to test the depth extent of all targets within the Property. All of the data generated from exploration is constantly being entered into advanced geological and geo-statistical software.

The Tesoro Property can be classified as an advanced stage gold exploration target that hosts numerous historic gold showings and gold workings.

Mr. Hobbes