North Creswick has recorded historical production of 1.7 Mozs from buried alluvial gold deposits known as 'deep leads'. Out of this recorded production, nearly 1.0 Mozs comes from a much smaller area (approximately 3km long and 3km wide). Evidence from other parts of Victoria has shown that rich quartz hosted gold deposits exist directly underneath the richest parts of the alluvial gold deposits. Petra Minerals therefore interprets that the best place to explore for high grade quartz gold deposits at North Creswick is directly underneath the highest concentration of gold defined by the historical deep lead mining.